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
3881
3882
3883
3884
3885
3886
3887
3888
3889
3890
3891
3892
3893
3894
3895
3896
3897
3898
3899
3900
3901
3902
3903
3904
3905
3906
3907
3908
3909
3910
3911
3912
3913
3914
3915
3916
3917
3918
3919
3920
3921
3922
3923
3924
3925
3926
3927
3928
3929
3930
3931
3932
3933
3934
3935
3936
3937
3938
3939
3940
3941
3942
3943
3944
3945
3946
3947
3948
3949
3950
3951
3952
3953
3954
3955
3956
3957
3958
3959
3960
3961
3962
3963
3964
3965
3966
3967
3968
3969
3970
3971
3972
3973
3974
3975
3976
3977
3978
3979
3980
3981
3982
3983
3984
3985
3986
3987
3988
3989
3990
3991
3992
3993
3994
3995
3996
3997
3998
3999
4000
4001
4002
4003
4004
4005
4006
4007
4008
4009
4010
4011
4012
4013
4014
4015
4016
4017
4018
4019
4020
4021
4022
4023
4024
4025
4026
4027
4028
4029
4030
4031
4032
4033
4034
4035
4036
4037
4038
4039
4040
4041
4042
4043
4044
4045
4046
4047
4048
4049
4050
4051
4052
4053
4054
4055
4056
4057
4058
4059
4060
4061
4062
4063
4064
4065
4066
4067
4068
4069
4070
4071
4072
4073
4074
4075
4076
4077
4078
4079
4080
4081
4082
4083
4084
4085
4086
4087
4088
4089
4090
4091
4092
4093
4094
4095
4096
4097
4098
4099
4100
4101
4102
4103
4104
4105
4106
4107
4108
4109
4110
4111
4112
4113
4114
4115
4116
4117
4118
4119
4120
4121
4122
4123
4124
4125
4126
4127
4128
4129
4130
4131
4132
4133
4134
4135
4136
4137
4138
4139
4140
4141
4142
4143
4144
4145
4146
4147
4148
4149
4150
4151
4152
4153
4154
4155
4156
4157
4158
4159
4160
4161
4162
4163
4164
4165
4166
4167
4168
4169
4170
4171
4172
4173
4174
4175
4176
4177
4178
4179
4180
4181
4182
4183
4184
4185
4186
4187
4188
4189
4190
4191
4192
4193
4194
4195
4196
4197
4198
4199
4200
4201
4202
4203
4204
4205
4206
4207
4208
4209
4210
4211
4212
4213
4214
4215
4216
4217
4218
4219
4220
4221
4222
4223
4224
4225
4226
4227
4228
4229
4230
4231
4232
4233
4234
4235
4236
4237
4238
4239
4240
4241
4242
4243
4244
4245
4246
4247
4248
4249
4250
4251
4252
4253
4254
4255
4256
4257
4258
4259
4260
4261
4262
4263
4264
4265
4266
4267
4268
4269
4270
4271
4272
4273
4274
4275
4276
4277
4278
4279
4280
4281
4282
4283
4284
4285
4286
4287
4288
4289
4290
4291
4292
4293
4294
4295
4296
4297
4298
4299
4300
4301
4302
4303
4304
4305
4306
4307
4308
4309
4310
4311
4312
4313
4314
4315
4316
4317
4318
4319
4320
4321
4322
4323
4324
4325
4326
4327
4328
4329
4330
4331
4332
4333
4334
4335
4336
4337
4338
4339
4340
4341
4342
4343
4344
4345
4346
4347
4348
4349
4350
4351
4352
4353
4354
4355
4356
4357
4358
4359
4360
4361
4362
4363
4364
4365
4366
4367
4368
4369
4370
4371
4372
4373
4374
4375
4376
4377
4378
4379
4380
4381
4382
4383
4384
4385
4386
4387
4388
4389
4390
4391
4392
4393
4394
4395
4396
4397
4398
4399
4400
4401
4402
4403
4404
4405
4406
4407
4408
4409
4410
4411
4412
4413
4414
4415
4416
4417
4418
4419
4420
4421
4422
4423
4424
4425
4426
4427
4428
4429
4430
4431
4432
4433
4434
4435
4436
4437
4438
4439
4440
4441
4442
4443
4444
4445
4446
4447
4448
4449
4450
4451
4452
4453
4454
4455
4456
4457
4458
4459
4460
4461
4462
4463
4464
4465
4466
4467
4468
4469
4470
4471
4472
4473
4474
4475
4476
4477
4478
4479
4480
4481
4482
4483
4484
4485
4486
4487
4488
4489
4490
4491
4492
4493
4494
4495
4496
4497
4498
4499
4500
4501
4502
4503
4504
4505
4506
4507
4508
4509
4510
4511
4512
4513
4514
4515
4516
4517
4518
4519
4520
4521
4522
4523
4524
4525
4526
4527
4528
4529
4530
4531
4532
4533
4534
4535
4536
4537
4538
4539
4540
4541
4542
4543
4544
4545
4546
4547
4548
4549
4550
4551
4552
4553
4554
4555
4556
4557
4558
4559
4560
4561
4562
4563
4564
4565
4566
4567
4568
4569
4570
4571
4572
4573
4574
4575
4576
4577
4578
4579
4580
4581
4582
4583
4584
4585
4586
4587
4588
4589
4590
4591
4592
4593
4594
4595
4596
4597
4598
4599
4600
4601
4602
4603
4604
4605
4606
4607
4608
4609
4610
4611
4612
4613
4614
4615
4616
4617
4618
4619
4620
4621
4622
4623
4624
4625
4626
4627
4628
4629
4630
4631
4632
4633
4634
4635
4636
4637
4638
4639
4640
4641
4642
4643
4644
4645
4646
4647
4648
4649
4650
4651
4652
4653
4654
4655
4656
4657
4658
4659
4660
4661
4662
4663
4664
4665
4666
4667
4668
4669
4670
4671
4672
4673
4674
4675
4676
4677
4678
4679
4680
4681
4682
4683
4684
4685
4686
4687
4688
4689
4690
4691
4692
4693
4694
4695
4696
4697
4698
4699
4700
4701
4702
4703
4704
4705
4706
4707
4708
4709
4710
4711
4712
4713
4714
4715
4716
4717
4718
4719
4720
4721
4722
4723
4724
4725
4726
4727
4728
4729
4730
4731
4732
4733
4734
4735
4736
4737
4738
4739
4740
4741
4742
4743
4744
4745
4746
4747
4748
4749
4750
4751
4752
4753
4754
4755
4756
4757
4758
4759
4760
4761
4762
4763
4764
4765
4766
4767
4768
4769
4770
4771
4772
4773
4774
4775
4776
4777
4778
4779
4780
4781
4782
4783
4784
4785
4786
4787
4788
4789
4790
4791
4792
4793
4794
4795
4796
4797
4798
4799
4800
4801
4802
4803
4804
4805
4806
4807
4808
4809
4810
4811
4812
4813
4814
4815
4816
4817
4818
4819
4820
4821
4822
4823
4824
4825
4826
4827
4828
4829
4830
4831
4832
4833
4834
4835
4836
4837
4838
4839
4840
4841
4842
4843
4844
4845
4846
4847
4848
4849
4850
4851
4852
4853
4854
4855
4856
4857
4858
4859
4860
4861
4862
4863
4864
4865
4866
4867
4868
4869
4870
4871
4872
4873
4874
4875
4876
4877
4878
4879
4880
4881
4882
4883
4884
4885
4886
4887
4888
4889
4890
4891
4892
4893
4894
4895
4896
4897
4898
4899
4900
4901
4902
4903
4904
4905
4906
4907
4908
4909
4910
4911
4912
4913
4914
4915
4916
4917
4918
4919
4920
4921
4922
4923
4924
4925
4926
4927
4928
4929
4930
4931
4932
4933
4934
4935
4936
4937
4938
4939
4940
4941
4942
4943
4944
4945
4946
4947
4948
4949
4950
4951
4952
4953
4954
4955
4956
4957
4958
4959
4960
4961
4962
4963
4964
4965
4966
4967
4968
4969
4970
4971
4972
4973
4974
4975
4976
4977
4978
4979
4980
4981
4982
4983
4984
4985
4986
4987
4988
4989
4990
4991
4992
4993
4994
4995
4996
4997
4998
4999
5000
5001
5002
5003
5004
5005
5006
5007
5008
5009
5010
5011
5012
5013
5014
5015
5016
5017
5018
5019
5020
5021
5022
5023
5024
5025
5026
5027
5028
5029
5030
5031
5032
5033
5034
5035
5036
5037
5038
5039
5040
5041
5042
5043
5044
5045
5046
5047
5048
5049
5050
5051
5052
5053
5054
5055
5056
5057
5058
5059
5060
5061
5062
5063
5064
5065
5066
5067
5068
5069
5070
5071
5072
5073
5074
5075
5076
5077
5078
5079
5080
5081
5082
5083
5084
5085
5086
5087
5088
5089
5090
5091
5092
5093
5094
5095
5096
5097
5098
5099
5100
5101
5102
5103
5104
5105
5106
5107
5108
5109
5110
5111
5112
5113
5114
5115
5116
5117
5118
5119
5120
5121
5122
5123
5124
5125
5126
5127
5128
5129
5130
5131
5132
5133
5134
5135
5136
5137
5138
5139
5140
5141
5142
5143
5144
5145
5146
5147
5148
5149
5150
5151
5152
5153
5154
5155
5156
5157
5158
5159
5160
5161
5162
5163
5164
5165
5166
5167
5168
5169
5170
5171
5172
5173
5174
5175
5176
5177
5178
5179
5180
5181
5182
5183
5184
5185
5186
5187
5188
5189
5190
5191
5192
5193
5194
5195
5196
5197
5198
5199
5200
5201
5202
5203
5204
5205
5206
5207
5208
5209
5210
5211
5212
5213
5214
5215
5216
5217
5218
5219
5220
5221
5222
5223
5224
5225
5226
5227
5228
5229
5230
5231
5232
5233
5234
5235
5236
5237
5238
5239
5240
5241
5242
5243
5244
5245
5246
5247
5248
5249
5250
5251
5252
5253
5254
5255
5256
5257
5258
5259
5260
5261
5262
5263
5264
5265
5266
5267
5268
5269
5270
5271
5272
5273
5274
5275
5276
5277
5278
5279
5280
5281
5282
5283
5284
5285
5286
5287
5288
5289
5290
5291
5292
5293
5294
5295
5296
5297
5298
5299
5300
5301
5302
5303
5304
5305
5306
5307
5308
5309
5310
5311
5312
5313
5314
5315
5316
5317
5318
5319
5320
5321
5322
5323
5324
5325
5326
5327
5328
5329
5330
5331
5332
5333
5334
5335
5336
5337
5338
5339
5340
5341
5342
5343
5344
5345
5346
5347
5348
5349
5350
5351
5352
5353
5354
5355
5356
5357
5358
5359
5360
5361
5362
5363
5364
5365
5366
5367
5368
5369
5370
5371
5372
5373
5374
5375
5376
5377
5378
5379
5380
5381
5382
5383
5384
5385
5386
5387
5388
5389
5390
5391
5392
5393
5394
5395
5396
5397
5398
5399
5400
5401
5402
5403
5404
5405
5406
5407
5408
5409
5410
5411
5412
5413
5414
5415
5416
5417
5418
5419
5420
5421
5422
5423
5424
5425
5426
5427
5428
5429
5430
5431
5432
5433
5434
5435
5436
5437
5438
5439
5440
5441
5442
5443
5444
5445
5446
5447
5448
5449
5450
5451
5452
5453
5454
5455
5456
5457
5458
5459
5460
5461
5462
5463
5464
5465
5466
5467
5468
5469
5470
5471
5472
5473
5474
5475
5476
5477
5478
5479
5480
5481
5482
5483
5484
5485
5486
5487
5488
5489
5490
5491
5492
5493
5494
5495
5496
5497
5498
5499
5500
5501
5502
5503
5504
5505
5506
5507
5508
5509
5510
5511
5512
5513
5514
5515
5516
5517
5518
5519
5520
5521
5522
5523
5524
5525
5526
5527
5528
5529
5530
5531
5532
5533
5534
5535
5536
5537
5538
5539
5540
5541
5542
5543
5544
5545
5546
5547
5548
5549
5550
5551
5552
5553
5554
5555
5556
5557
5558
5559
5560
5561
5562
5563
5564
5565
5566
5567
5568
5569
5570
5571
5572
5573
5574
5575
5576
5577
5578
5579
5580
5581
5582
5583
5584
5585
5586
5587
5588
5589
5590
5591
5592
5593
5594
5595
5596
5597
5598
5599
5600
5601
5602
5603
5604
5605
5606
5607
5608
5609
5610
5611
5612
5613
5614
5615
5616
5617
5618
5619
5620
5621
5622
5623
5624
5625
5626
5627
5628
5629
5630
5631
5632
5633
5634
5635
5636
5637
5638
5639
5640
5641
5642
5643
5644
5645
5646
5647
5648
5649
5650
5651
5652
5653
5654
5655
5656
5657
5658
5659
5660
5661
5662
5663
5664
5665
5666
5667
5668
5669
5670
5671
5672
5673
5674
5675
5676
5677
5678
5679
5680
5681
5682
5683
5684
5685
5686
5687
5688
5689
5690
5691
5692
5693
5694
5695
5696
5697
5698
5699
5700
5701
5702
5703
5704
5705
5706
5707
5708
5709
5710
5711
5712
5713
5714
5715
5716
5717
5718
5719
5720
5721
5722
5723
5724
5725
5726
5727
5728
5729
5730
5731
5732
5733
5734
5735
5736
5737
5738
5739
5740
5741
5742
5743
5744
5745
5746
5747
5748
5749
5750
5751
5752
5753
5754
5755
5756
5757
5758
5759
5760
5761
5762
5763
5764
5765
5766
5767
5768
5769
5770
5771
5772
5773
5774
5775
5776
5777
5778
5779
5780
5781
5782
5783
5784
5785
5786
5787
5788
5789
5790
5791
5792
5793
5794
5795
5796
5797
5798
5799
5800
5801
5802
5803
5804
5805
5806
5807
5808
5809
5810
5811
5812
5813
5814
5815
5816
5817
5818
5819
5820
5821
5822
5823
5824
5825
5826
5827
5828
5829
5830
5831
5832
5833
5834
5835
5836
5837
5838
5839
5840
5841
5842
5843
5844
5845
5846
5847
5848
5849
5850
5851
5852
5853
5854
5855
5856
5857
5858
5859
5860
5861
5862
5863
5864
5865
5866
5867
5868
5869
5870
5871
5872
5873
5874
5875
5876
5877
5878
5879
5880
5881
5882
5883
5884
5885
5886
5887
5888
5889
5890
5891
5892
5893
5894
5895
5896
5897
5898
5899
5900
5901
5902
5903
5904
5905
5906
5907
5908
5909
5910
5911
5912
5913
5914
5915
5916
5917
5918
5919
5920
5921
5922
5923
5924
5925
5926
5927
5928
5929
5930
5931
5932
5933
5934
5935
5936
5937
5938
5939
5940
5941
5942
5943
5944
5945
5946
5947
5948
5949
5950
5951
5952
5953
5954
5955
5956
5957
5958
5959
5960
5961
5962
5963
5964
5965
5966
5967
5968
5969
5970
5971
5972
5973
5974
5975
5976
5977
5978
5979
5980
5981
5982
5983
5984
5985
5986
5987
5988
5989
5990
5991
5992
5993
5994
5995
5996
5997
5998
5999
6000
6001
6002
6003
6004
6005
6006
6007
6008
6009
6010
6011
6012
6013
6014
6015
6016
6017
6018
6019
6020
6021
6022
6023
6024
6025
6026
6027
6028
6029
6030
6031
6032
6033
6034
6035
6036
6037
6038
6039
6040
6041
6042
6043
6044
6045
6046
6047
6048
6049
6050
6051
6052
6053
6054
6055
6056
6057
6058
6059
6060
6061
6062
6063
6064
6065
6066
6067
6068
6069
6070
6071
6072
6073
6074
6075
6076
6077
6078
6079
6080
6081
6082
6083
6084
6085
6086
6087
6088
6089
6090
6091
6092
6093
6094
6095
6096
6097
6098
6099
6100
6101
6102
6103
6104
6105
6106
6107
6108
6109
6110
6111
6112
6113
6114
6115
6116
6117
6118
6119
6120
6121
6122
6123
6124
6125
6126
6127
6128
6129
6130
6131
6132
6133
6134
6135
6136
6137
6138
6139
6140
6141
6142
6143
6144
6145
6146
6147
6148
6149
6150
6151
6152
6153
6154
6155
6156
6157
6158
6159
6160
6161
6162
6163
6164
6165
6166
6167
6168
6169
6170
6171
6172
6173
6174
6175
6176
6177
6178
6179
6180
6181
6182
6183
6184
6185
6186
6187
6188
6189
6190
6191
6192
6193
6194
6195
6196
6197
6198
6199
6200
6201
6202
6203
6204
6205
6206
6207
6208
6209
6210
6211
6212
6213
6214
6215
6216
6217
6218
6219
6220
6221
6222
6223
6224
6225
6226
6227
6228
6229
6230
6231
6232
6233
6234
6235
6236
6237
6238
6239
6240
6241
6242
6243
6244
6245
6246
6247
6248
6249
6250
6251
6252
6253
6254
6255
6256
6257
6258
6259
6260
6261
6262
6263
6264
6265
6266
6267
6268
6269
6270
6271
6272
6273
6274
6275
6276
6277
6278
6279
6280
6281
6282
6283
6284
6285
6286
6287
6288
6289
6290
6291
6292
6293
6294
6295
6296
6297
6298
6299
6300
6301
6302
6303
6304
6305
6306
6307
6308
6309
6310
6311
6312
6313
6314
6315
6316
6317
6318
6319
6320
6321
6322
6323
6324
6325
6326
6327
6328
6329
6330
6331
6332
6333
6334
6335
6336
6337
6338
6339
6340
6341
6342
6343
6344
6345
6346
6347
6348
6349
6350
6351
6352
6353
6354
6355
6356
6357
6358
6359
6360
6361
6362
6363
6364
6365
6366
6367
6368
6369
6370
6371
6372
6373
6374
6375
6376
6377
6378
6379
6380
6381
6382
6383
6384
6385
6386
6387
6388
6389
6390
6391
6392
6393
6394
6395
6396
6397
6398
6399
6400
6401
6402
6403
6404
6405
6406
6407
6408
6409
6410
6411
6412
6413
6414
6415
6416
6417
6418
6419
6420
6421
6422
6423
6424
6425
6426
6427
6428
6429
6430
6431
6432
6433
6434
6435
6436
6437
6438
6439
6440
6441
6442
6443
6444
6445
6446
6447
6448
6449
6450
6451
6452
6453
6454
6455
6456
6457
6458
6459
6460
6461
6462
6463
6464
6465
6466
6467
6468
6469
6470
6471
6472
6473
6474
6475
6476
6477
6478
6479
6480
6481
6482
6483
6484
6485
6486
6487
6488
6489
6490
6491
6492
6493
6494
6495
6496
6497
6498
6499
6500
6501
6502
6503
6504
6505
6506
6507
6508
6509
6510
6511
6512
6513
6514
6515
6516
6517
6518
6519
6520
6521
6522
6523
6524
6525
6526
6527
6528
6529
6530
6531
6532
6533
6534
6535
6536
6537
6538
6539
6540
6541
6542
6543
6544
6545
6546
6547
6548
6549
6550
6551
6552
6553
6554
6555
6556
6557
6558
6559
6560
6561
6562
6563
6564
6565
6566
6567
6568
6569
6570
6571
6572
6573
6574
6575
6576
6577
6578
6579
6580
6581
6582
6583
6584
6585
6586
6587
6588
6589
6590
6591
6592
6593
6594
6595
6596
6597
6598
6599
6600
6601
6602
6603
6604
6605
6606
6607
6608
6609
6610
6611
6612
6613
6614
6615
6616
6617
6618
6619
6620
6621
6622
6623
6624
6625
6626
6627
6628
6629
6630
6631
6632
6633
6634
6635
6636
6637
6638
6639
6640
6641
6642
6643
6644
6645
6646
6647
6648
6649
6650
6651
6652
6653
6654
6655
6656
6657
6658
6659
6660
6661
6662
6663
6664
6665
6666
6667
6668
6669
6670
6671
6672
6673
6674
6675
6676
6677
6678
6679
6680
6681
6682
6683
6684
6685
6686
6687
6688
6689
6690
6691
6692
6693
6694
6695
6696
6697
6698
6699
6700
6701
6702
6703
6704
6705
6706
6707
6708
6709
6710
6711
6712
6713
6714
6715
6716
6717
6718
6719
6720
6721
6722
6723
6724
6725
6726
6727
6728
6729
6730
6731
6732
6733
6734
6735
6736
6737
6738
6739
6740
6741
6742
6743
6744
6745
6746
6747
6748
6749
6750
6751
6752
6753
6754
6755
6756
6757
6758
6759
6760
6761
6762
6763
6764
6765
6766
6767
6768
6769
6770
6771
6772
6773
6774
6775
6776
6777
6778
6779
6780
6781
6782
6783
6784
6785
6786
6787
6788
6789
6790
6791
6792
6793
6794
6795
6796
6797
6798
6799
6800
6801
6802
6803
6804
6805
6806
6807
6808
6809
6810
6811
6812
6813
6814
6815
6816
6817
6818
6819
6820
6821
6822
6823
6824
6825
6826
6827
6828
6829
6830
6831
6832
6833
6834
6835
6836
6837
6838
6839
6840
6841
6842
6843
6844
6845
6846
6847
6848
6849
6850
6851
6852
6853
6854
6855
6856
6857
6858
6859
6860
6861
6862
6863
6864
6865
6866
6867
6868
6869
6870
6871
6872
6873
6874
6875
6876
6877
6878
6879
6880
6881
6882
6883
6884
6885
6886
6887
6888
6889
6890
6891
6892
6893
6894
6895
6896
6897
6898
6899
6900
6901
6902
6903
6904
6905
6906
6907
6908
6909
6910
6911
6912
6913
6914
6915
6916
6917
6918
6919
6920
6921
6922
6923
6924
6925
6926
6927
6928
6929
6930
6931
6932
6933
6934
6935
6936
6937
6938
6939
6940
6941
6942
6943
6944
6945
6946
6947
6948
6949
6950
6951
6952
6953
6954
6955
6956
6957
6958
6959
6960
6961
6962
6963
6964
6965
6966
6967
6968
6969
6970
6971
6972
6973
6974
6975
6976
6977
6978
6979
6980
6981
6982
6983
6984
6985
6986
6987
6988
6989
6990
6991
6992
6993
6994
6995
6996
6997
6998
6999
7000
7001
7002
7003
7004
7005
7006
7007
7008
7009
7010
7011
7012
7013
7014
7015
7016
7017
7018
7019
7020
7021
7022
7023
7024
7025
7026
7027
7028
7029
7030
7031
7032
7033
7034
7035
7036
7037
7038
7039
7040
7041
7042
7043
7044
7045
7046
7047
7048
7049
7050
7051
7052
7053
7054
7055
7056
7057
7058
7059
7060
7061
7062
7063
7064
7065
7066
7067
7068
7069
7070
7071
7072
7073
7074
7075
7076
7077
7078
7079
7080
7081
7082
7083
7084
7085
7086
7087
7088
7089
7090
7091
7092
7093
7094
7095
7096
7097
7098
7099
7100
7101
7102
7103
7104
7105
7106
7107
7108
7109
7110
7111
7112
7113
7114
7115
7116
7117
7118
7119
7120
7121
7122
7123
7124
7125
7126
7127
7128
7129
7130
7131
7132
7133
7134
7135
7136
7137
7138
7139
7140
7141
7142
7143
7144
7145
7146
7147
7148
7149
7150
7151
7152
7153
7154
7155
7156
7157
7158
7159
7160
7161
7162
7163
7164
7165
7166
7167
7168
7169
7170
7171
7172
7173
7174
7175
7176
7177
7178
7179
7180
7181
7182
7183
7184
7185
7186
7187
7188
7189
7190
7191
7192
7193
7194
7195
7196
7197
7198
7199
7200
7201
7202
7203
7204
7205
7206
7207
7208
7209
7210
7211
7212
7213
7214
7215
7216
7217
7218
7219
7220
7221
7222
7223
7224
7225
7226
7227
7228
7229
7230
7231
7232
7233
7234
7235
7236
7237
7238
7239
7240
7241
7242
7243
7244
7245
7246
7247
7248
7249
7250
7251
7252
7253
7254
7255
7256
7257
7258
7259
7260
7261
7262
7263
7264
7265
7266
7267
7268
7269
7270
7271
7272
7273
7274
7275
7276
7277
7278
7279
7280
7281
7282
7283
7284
7285
7286
7287
7288
7289
7290
7291
7292
7293
7294
7295
7296
7297
7298
7299
7300
7301
7302
7303
7304
7305
7306
7307
7308
7309
7310
7311
7312
7313
7314
7315
7316
7317
7318
7319
7320
7321
7322
7323
7324
7325
7326
7327
7328
7329
7330
7331
7332
7333
7334
7335
7336
7337
7338
7339
7340
7341
7342
7343
7344
7345
7346
7347
7348
7349
7350
7351
7352
7353
7354
7355
7356
7357
7358
7359
7360
7361
7362
7363
7364
7365
7366
7367
7368
7369
7370
7371
7372
7373
7374
7375
7376
7377
7378
7379
7380
7381
7382
7383
7384
7385
7386
7387
7388
7389
7390
7391
7392
7393
7394
7395
7396
7397
7398
7399
7400
7401
7402
7403
7404
7405
7406
7407
7408
7409
7410
7411
7412
7413
7414
7415
7416
7417
7418
7419
7420
7421
7422
7423
7424
7425
7426
7427
7428
7429
7430
7431
7432
7433
7434
7435
7436
7437
7438
7439
7440
7441
7442
7443
7444
7445
7446
7447
7448
7449
7450
7451
7452
7453
7454
7455
7456
7457
7458
7459
7460
7461
7462
7463
7464
7465
7466
7467
7468
7469
7470
7471
7472
7473
7474
7475
7476
7477
7478
7479
7480
7481
7482
7483
7484
7485
7486
7487
7488
7489
7490
7491
7492
7493
7494
7495
7496
7497
7498
7499
7500
7501
7502
7503
7504
7505
7506
7507
7508
7509
7510
7511
7512
7513
7514
7515
7516
7517
7518
7519
7520
7521
7522
7523
7524
7525
7526
7527
7528
7529
7530
7531
7532
7533
7534
7535
7536
7537
7538
7539
7540
7541
7542
7543
7544
7545
7546
7547
7548
7549
7550
7551
7552
7553
7554
7555
7556
7557
7558
7559
7560
7561
7562
7563
7564
7565
7566
7567
7568
7569
7570
7571
7572
7573
7574
7575
7576
7577
7578
7579
7580
7581
7582
7583
7584
7585
7586
7587
7588
7589
7590
7591
7592
7593
7594
7595
7596
7597
7598
7599
7600
7601
7602
7603
7604
7605
7606
7607
7608
7609
7610
7611
7612
7613
7614
7615
7616
7617
7618
7619
7620
7621
7622
7623
7624
7625
7626
7627
7628
7629
7630
7631
7632
7633
7634
7635
7636
7637
7638
7639
7640
7641
7642
7643
7644
7645
7646
7647
7648
7649
7650
7651
7652
7653
7654
7655
7656
7657
7658
7659
7660
7661
7662
7663
7664
7665
7666
7667
7668
7669
7670
7671
7672
7673
7674
7675
7676
7677
7678
7679
7680
7681
7682
7683
7684
7685
7686
7687
7688
7689
7690
7691
7692
7693
7694
7695
7696
7697
7698
7699
7700
7701
7702
7703
7704
7705
7706
7707
7708
7709
7710
7711
7712
7713
7714
7715
7716
7717
7718
7719
7720
7721
7722
7723
7724
7725
7726
7727
7728
7729
7730
7731
7732
7733
7734
7735
7736
7737
7738
7739
7740
7741
7742
7743
7744
7745
7746
7747
7748
7749
7750
7751
7752
7753
7754
7755
7756
7757
7758
7759
7760
7761
7762
7763
7764
7765
7766
7767
7768
7769
7770
7771
7772
7773
7774
7775
7776
7777
7778
7779
7780
7781
7782
7783
7784
7785
7786
7787
7788
7789
7790
7791
7792
7793
7794
7795
7796
7797
7798
7799
7800
7801
7802
7803
7804
7805
7806
7807
7808
7809
7810
7811
7812
7813
7814
7815
7816
7817
7818
7819
7820
7821
7822
7823
7824
7825
7826
7827
7828
7829
7830
7831
7832
7833
7834
7835
7836
7837
7838
7839
7840
7841
7842
7843
7844
7845
7846
7847
7848
7849
7850
7851
7852
7853
7854
7855
7856
7857
7858
7859
7860
7861
7862
7863
7864
7865
7866
7867
7868
7869
7870
7871
7872
7873
7874
7875
7876
7877
7878
7879
7880
7881
7882
7883
7884
7885
7886
7887
7888
7889
7890
7891
7892
7893
7894
7895
7896
7897
7898
7899
7900
7901
7902
7903
7904
7905
7906
7907
7908
7909
7910
7911
7912
7913
7914
7915
7916
7917
7918
7919
7920
7921
7922
7923
7924
7925
7926
7927
7928
7929
7930
7931
7932
7933
7934
7935
7936
7937
7938
7939
7940
7941
7942
7943
7944
7945
7946
7947
7948
7949
7950
7951
7952
7953
7954
7955
7956
7957
7958
7959
7960
7961
7962
7963
7964
7965
7966
7967
7968
7969
7970
7971
7972
7973
7974
7975
7976
7977
7978
7979
7980
7981
7982
7983
7984
7985
7986
7987
7988
7989
7990
7991
7992
7993
7994
7995
7996
7997
7998
7999
8000
8001
8002
8003
8004
8005
8006
8007
8008
8009
8010
8011
8012
8013
8014
8015
8016
8017
8018
8019
8020
8021
8022
8023
8024
8025
8026
8027
8028
8029
8030
8031
8032
8033
8034
8035
8036
8037
8038
8039
8040
8041
8042
8043
8044
8045
8046
8047
8048
8049
8050
8051
8052
8053
8054
8055
8056
8057
8058
8059
8060
8061
8062
8063
8064
8065
8066
8067
8068
8069
8070
8071
8072
8073
8074
8075
8076
8077
8078
8079
8080
8081
8082
8083
8084
8085
8086
8087
8088
8089
8090
8091
8092
8093
8094
8095
8096
8097
8098
8099
8100
8101
8102
8103
8104
8105
8106
8107
8108
8109
8110
8111
8112
8113
8114
8115
8116
8117
8118
8119
8120
8121
8122
8123
8124
8125
8126
8127
8128
8129
8130
8131
8132
8133
8134
8135
8136
8137
8138
8139
8140
8141
8142
8143
8144
8145
8146
8147
8148
8149
8150
8151
8152
8153
8154
8155
8156
8157
8158
8159
8160
8161
8162
8163
8164
8165
8166
8167
8168
8169
8170
8171
8172
8173
8174
8175
8176
8177
8178
8179
8180
8181
8182
8183
8184
8185
8186
8187
8188
8189
8190
8191
8192
8193
8194
8195
8196
8197
8198
8199
8200
8201
8202
8203
8204
8205
8206
8207
8208
8209
8210
8211
8212
8213
8214
8215
8216
8217
8218
8219
8220
8221
8222
8223
8224
8225
8226
8227
8228
8229
8230
8231
8232
8233
8234
8235
8236
8237
8238
8239
8240
8241
8242
8243
8244
8245
8246
8247
8248
8249
8250
8251
8252
8253
8254
8255
8256
8257
8258
8259
8260
8261
8262
8263
8264
8265
8266
8267
8268
8269
8270
8271
8272
8273
8274
8275
8276
8277
8278
8279
8280
8281
8282
8283
8284
8285
8286
8287
8288
8289
8290
8291
8292
8293
8294
8295
8296
8297
8298
8299
8300
8301
8302
8303
8304
8305
8306
8307
8308
8309
8310
8311
8312
8313
8314
8315
8316
8317
8318
8319
8320
8321
8322
8323
8324
8325
8326
8327
8328
8329
8330
8331
8332
8333
8334
8335
8336
8337
8338
8339
8340
8341
8342
8343
8344
8345
8346
8347
8348
8349
8350
8351
8352
8353
8354
8355
8356
8357
8358
8359
8360
8361
8362
8363
8364
8365
8366
8367
8368
8369
8370
8371
8372
8373
8374
8375
8376
8377
8378
8379
8380
8381
8382
8383
8384
8385
8386
8387
8388
8389
8390
8391
8392
8393
8394
8395
8396
8397
8398
8399
8400
8401
8402
8403
8404
8405
8406
8407
8408
8409
8410
8411
8412
8413
8414
8415
8416
8417
8418
8419
8420
8421
8422
8423
8424
8425
8426
8427
8428
8429
8430
8431
8432
8433
8434
8435
8436
8437
8438
8439
8440
8441
8442
8443
8444
8445
8446
8447
8448
8449
8450
8451
8452
8453
8454
8455
8456
8457
8458
8459
8460
8461
8462
8463
8464
8465
8466
8467
8468
8469
8470
8471
8472
8473
8474
8475
8476
8477
8478
8479
8480
8481
8482
8483
8484
8485
8486
8487
8488
8489
8490
8491
8492
8493
8494
8495
8496
8497
8498
8499
8500
8501
8502
8503
8504
8505
8506
8507
8508
8509
8510
8511
8512
8513
8514
8515
8516
8517
8518
8519
8520
8521
8522
8523
8524
8525
8526
8527
8528
8529
8530
8531
8532
8533
8534
8535
8536
8537
8538
8539
8540
8541
8542
8543
8544
8545
8546
8547
8548
8549
8550
8551
8552
8553
8554
8555
8556
8557
8558
8559
8560
8561
8562
8563
8564
8565
8566
8567
8568
8569
8570
8571
8572
8573
8574
8575
8576
8577
8578
8579
8580
8581
8582
8583
8584
8585
8586
8587
8588
8589
8590
8591
8592
8593
8594
8595
8596
8597
8598
8599
8600
8601
8602
8603
8604
8605
8606
8607
8608
8609
8610
8611
8612
8613
8614
8615
8616
8617
8618
8619
8620
8621
8622
8623
8624
8625
8626
8627
8628
8629
8630
8631
8632
8633
8634
8635
8636
8637
8638
8639
8640
8641
8642
8643
8644
8645
8646
8647
8648
8649
8650
8651
8652
8653
8654
8655
8656
8657
8658
8659
8660
8661
8662
8663
8664
8665
8666
8667
8668
8669
8670
8671
8672
8673
8674
8675
8676
8677
8678
8679
8680
8681
8682
8683
8684
8685
8686
8687
8688
8689
8690
8691
8692
8693
8694
8695
8696
8697
8698
8699
8700
8701
8702
8703
8704
8705
8706
8707
8708
8709
8710
8711
8712
8713
8714
8715
8716
8717
8718
8719
8720
8721
8722
8723
8724
8725
8726
8727
8728
8729
8730
8731
8732
8733
8734
8735
8736
8737
8738
8739
8740
8741
8742
8743
8744
8745
8746
8747
8748
8749
8750
8751
8752
8753
8754
8755
8756
8757
8758
8759
8760
8761
8762
8763
8764
8765
8766
8767
8768
8769
8770
8771
8772
8773
8774
8775
8776
8777
8778
8779
8780
8781
8782
8783
8784
8785
8786
8787
8788
8789
8790
8791
8792
8793
8794
8795
8796
8797
8798
8799
8800
8801
8802
8803
8804
8805
8806
8807
8808
8809
8810
8811
8812
8813
8814
8815
8816
8817
8818
8819
8820
8821
8822
8823
8824
8825
8826
8827
8828
8829
8830
8831
8832
8833
8834
8835
8836
8837
8838
8839
8840
8841
8842
8843
8844
8845
8846
8847
8848
8849
8850
8851
8852
8853
8854
8855
8856
8857
8858
8859
8860
8861
8862
8863
8864
8865
8866
8867
8868
8869
8870
8871
8872
8873
8874
8875
8876
8877
8878
8879
8880
8881
8882
8883
8884
8885
8886
8887
8888
8889
8890
8891
8892
8893
8894
8895
8896
8897
8898
8899
8900
8901
8902
8903
8904
8905
8906
8907
8908
8909
8910
8911
8912
8913
8914
8915
8916
8917
8918
8919
8920
8921
8922
8923
8924
8925
8926
8927
8928
8929
8930
8931
8932
8933
8934
8935
8936
8937
8938
8939
8940
8941
8942
8943
8944
8945
8946
8947
8948
8949
8950
8951
8952
8953
8954
8955
8956
8957
8958
8959
8960
8961
8962
8963
8964
8965
8966
8967
8968
8969
8970
8971
8972
8973
8974
8975
8976
8977
8978
8979
8980
8981
8982
8983
8984
8985
8986
8987
8988
8989
8990
8991
8992
8993
8994
8995
8996
8997
8998
8999
9000
9001
9002
9003
9004
9005
9006
9007
9008
9009
9010
9011
9012
9013
9014
9015
9016
9017
9018
9019
9020
9021
9022
9023
9024
9025
9026
9027
9028
9029
9030
9031
9032
9033
9034
9035
9036
9037
9038
9039
9040
9041
9042
9043
9044
9045
9046
9047
9048
9049
9050
9051
9052
9053
9054
9055
9056
9057
9058
9059
9060
9061
9062
9063
9064
9065
9066
9067
9068
9069
9070
9071
9072
9073
9074
9075
9076
9077
9078
9079
9080
9081
9082
9083
9084
9085
9086
9087
9088
9089
9090
9091
9092
9093
9094
9095
9096
9097
9098
9099
9100
9101
9102
9103
9104
9105
9106
9107
9108
9109
9110
9111
9112
9113
9114
9115
9116
9117
9118
9119
9120
9121
9122
9123
9124
9125
9126
9127
9128
9129
9130
9131
9132
9133
9134
9135
9136
9137
9138
9139
9140
9141
9142
9143
9144
9145
9146
9147
9148
9149
9150
9151
9152
9153
9154
9155
9156
9157
9158
9159
9160
9161
9162
9163
9164
9165
9166
9167
9168
9169
9170
9171
9172
9173
9174
9175
9176
9177
9178
9179
9180
9181
9182
9183
9184
9185
9186
9187
9188
9189
9190
9191
9192
9193
9194
9195
9196
9197
9198
9199
9200
9201
9202
9203
9204
9205
9206
9207
9208
9209
9210
9211
9212
9213
9214
9215
9216
9217
9218
9219
9220
9221
9222
9223
9224
9225
9226
9227
9228
9229
9230
9231
9232
9233
9234
9235
9236
9237
9238
9239
9240
9241
9242
9243
9244
9245
9246
9247
9248
9249
9250
9251
9252
9253
9254
9255
9256
9257
9258
9259
9260
9261
9262
9263
9264
9265
9266
9267
9268
9269
9270
9271
9272
9273
9274
9275
9276
9277
9278
9279
9280
9281
9282
9283
9284
9285
9286
9287
9288
9289
9290
9291
9292
9293
9294
9295
9296
9297
9298
9299
9300
9301
9302
9303
9304
9305
9306
9307
9308
9309
9310
9311
9312
9313
9314
9315
9316
9317
9318
9319
9320
9321
9322
9323
9324
9325
9326
9327
9328
9329
9330
9331
9332
9333
9334
9335
9336
9337
9338
9339
9340
9341
9342
9343
9344
9345
9346
9347
9348
9349
9350
9351
9352
9353
9354
9355
9356
9357
9358
9359
9360
9361
9362
9363
9364
9365
9366
9367
9368
9369
9370
9371
9372
9373
9374
9375
9376
9377
9378
9379
9380
9381
9382
9383
9384
9385
9386
9387
9388
9389
9390
9391
9392
9393
9394
9395
9396
9397
9398
9399
9400
9401
9402
9403
9404
9405
9406
9407
9408
9409
9410
9411
9412
9413
9414
9415
9416
9417
9418
9419
9420
9421
9422
9423
9424
9425
9426
9427
9428
9429
9430
9431
9432
9433
9434
9435
9436
9437
9438
9439
9440
9441
9442
9443
9444
9445
9446
9447
9448
9449
9450
9451
9452
9453
9454
9455
9456
9457
9458
9459
9460
9461
9462
9463
9464
9465
9466
9467
9468
9469
9470
9471
9472
9473
9474
9475
9476
9477
9478
9479
9480
9481
9482
9483
9484
9485
9486
9487
9488
9489
9490
9491
9492
9493
9494
9495
9496
9497
9498
9499
9500
9501
9502
9503
9504
9505
9506
9507
9508
9509
9510
9511
9512
9513
9514
9515
9516
9517
9518
9519
9520
9521
9522
9523
9524
9525
9526
9527
9528
9529
9530
9531
9532
9533
9534
9535
9536
9537
9538
9539
9540
9541
9542
9543
9544
9545
9546
9547
9548
9549
9550
9551
9552
9553
9554
9555
9556
9557
9558
9559
9560
9561
9562
9563
9564
9565
9566
9567
9568
9569
9570
9571
9572
9573
9574
9575
9576
9577
9578
9579
9580
9581
9582
9583
9584
9585
9586
9587
9588
9589
9590
9591
9592
9593
9594
9595
9596
9597
9598
9599
9600
9601
9602
9603
9604
9605
9606
9607
9608
9609
9610
9611
9612
9613
9614
9615
9616
9617
9618
9619
9620
9621
9622
9623
9624
9625
9626
9627
9628
9629
9630
9631
9632
9633
9634
9635
9636
9637
9638
9639
9640
9641
9642
9643
9644
9645
9646
9647
9648
9649
9650
9651
9652
9653
9654
9655
9656
9657
9658
9659
9660
9661
9662
9663
9664
9665
9666
9667
9668
9669
9670
9671
9672
9673
9674
9675
9676
9677
9678
9679
9680
9681
9682
9683
9684
9685
9686
9687
9688
9689
9690
9691
9692
9693
9694
9695
9696
9697
9698
9699
9700
9701
9702
9703
9704
9705
9706
9707
9708
9709
9710
9711
9712
9713
9714
9715
9716
9717
9718
9719
9720
9721
9722
9723
9724
9725
9726
9727
9728
9729
9730
9731
9732
9733
9734
9735
9736
9737
9738
9739
9740
9741
9742
9743
9744
9745
9746
9747
9748
9749
9750
9751
9752
9753
9754
9755
9756
9757
9758
9759
9760
9761
9762
9763
9764
9765
9766
9767
9768
9769
9770
9771
9772
9773
9774
9775
9776
9777
9778
9779
9780
9781
9782
9783
9784
9785
9786
9787
9788
9789
9790
9791
9792
9793
9794
9795
9796
9797
9798
9799
9800
9801
9802
9803
9804
9805
9806
9807
9808
9809
9810
9811
9812
9813
9814
9815
9816
9817
9818
9819
9820
9821
9822
9823
9824
9825
9826
9827
9828
9829
9830
9831
9832
9833
9834
9835
9836
9837
9838
9839
9840
9841
9842
9843
9844
9845
9846
9847
9848
9849
9850
9851
9852
9853
9854
9855
9856
9857
9858
9859
9860
9861
9862
9863
9864
9865
9866
9867
9868
9869
9870
9871
9872
9873
9874
9875
9876
9877
9878
9879
9880
9881
9882
9883
9884
9885
9886
9887
9888
9889
9890
9891
9892
9893
9894
9895
9896
9897
9898
9899
9900
9901
9902
9903
9904
9905
9906
9907
9908
9909
9910
9911
9912
9913
9914
9915
9916
9917
9918
9919
9920
9921
9922
9923
9924
9925
9926
9927
9928
9929
9930
9931
9932
9933
9934
9935
9936
9937
9938
9939
9940
9941
9942
9943
9944
9945
9946
9947
9948
9949
9950
9951
9952
9953
9954
9955
9956
9957
9958
9959
9960
9961
9962
9963
9964
9965
9966
9967
9968
9969
9970
9971
9972
9973
9974
9975
9976
9977
9978
9979
9980
9981
9982
9983
9984
9985
9986
9987
9988
9989
9990
9991
9992
9993
9994
9995
9996
9997
9998
9999
10000
10001
10002
10003
10004
10005
10006
10007
10008
10009
10010
10011
10012
10013
10014
10015
10016
10017
10018
10019
10020
10021
10022
10023
10024
10025
10026
10027
10028
10029
10030
10031
10032
10033
10034
10035
10036
10037
10038
10039
10040
10041
10042
10043
10044
10045
10046
10047
10048
10049
10050
10051
10052
10053
10054
10055
10056
10057
10058
10059
10060
10061
10062
10063
10064
10065
10066
10067
10068
10069
10070
10071
10072
10073
10074
10075
10076
10077
10078
10079
10080
10081
10082
10083
10084
10085
10086
10087
10088
10089
10090
10091
10092
10093
10094
10095
10096
10097
10098
10099
10100
10101
10102
10103
10104
10105
10106
10107
10108
10109
10110
10111
10112
10113
10114
10115
10116
10117
10118
10119
10120
10121
10122
10123
10124
10125
10126
10127
10128
10129
10130
10131
10132
10133
10134
10135
10136
10137
10138
10139
10140
10141
10142
10143
10144
10145
10146
10147
10148
10149
10150
10151
10152
10153
10154
10155
10156
10157
10158
10159
10160
10161
10162
10163
10164
10165
10166
10167
10168
10169
10170
10171
10172
10173
10174
10175
10176
10177
10178
10179
10180
10181
10182
10183
10184
10185
10186
10187
10188
10189
10190
10191
10192
10193
10194
10195
10196
10197
10198
10199
10200
10201
10202
10203
10204
10205
10206
10207
10208
10209
10210
10211
10212
10213
10214
10215
10216
10217
10218
10219
10220
10221
10222
10223
10224
10225
10226
10227
10228
10229
10230
10231
10232
10233
10234
10235
10236
10237
10238
10239
10240
10241
10242
10243
10244
10245
10246
10247
10248
10249
10250
10251
10252
10253
10254
10255
10256
10257
10258
10259
10260
10261
10262
10263
10264
10265
10266
10267
10268
10269
10270
10271
10272
10273
10274
10275
10276
10277
10278
10279
10280
10281
10282
10283
10284
10285
10286
10287
10288
10289
10290
10291
10292
10293
10294
10295
10296
10297
10298
10299
10300
10301
10302
10303
10304
10305
10306
10307
10308
10309
10310
10311
10312
10313
10314
10315
10316
10317
10318
10319
10320
10321
10322
10323
10324
10325
10326
10327
10328
10329
10330
10331
10332
10333
10334
10335
10336
10337
10338
10339
10340
10341
10342
10343
10344
10345
10346
10347
10348
10349
10350
10351
10352
10353
10354
10355
10356
10357
10358
10359
10360
10361
10362
10363
10364
10365
10366
10367
10368
10369
10370
10371
10372
10373
10374
10375
10376
10377
10378
10379
10380
10381
10382
10383
10384
10385
10386
10387
10388
10389
10390
10391
10392
10393
10394
10395
10396
10397
10398
10399
10400
10401
10402
10403
10404
10405
10406
10407
10408
10409
10410
10411
10412
10413
10414
10415
10416
10417
10418
10419
10420
10421
10422
10423
10424
10425
10426
10427
10428
10429
10430
10431
10432
10433
10434
10435
10436
10437
10438
10439
10440
10441
10442
10443
10444
10445
10446
10447
10448
10449
10450
10451
10452
10453
10454
10455
10456
10457
10458
10459
10460
10461
10462
10463
10464
10465
10466
10467
10468
10469
10470
10471
10472
10473
10474
10475
10476
10477
10478
10479
10480
10481
10482
10483
10484
10485
10486
10487
10488
10489
10490
10491
10492
10493
10494
10495
10496
10497
10498
10499
10500
10501
10502
10503
10504
10505
10506
10507
10508
10509
10510
10511
10512
10513
10514
10515
10516
10517
10518
10519
10520
10521
10522
10523
10524
10525
10526
10527
10528
10529
10530
10531
10532
10533
10534
10535
10536
10537
10538
10539
10540
10541
10542
10543
10544
10545
10546
10547
10548
10549
10550
10551
10552
10553
10554
10555
10556
10557
10558
10559
10560
10561
10562
10563
10564
10565
10566
10567
10568
10569
10570
10571
10572
10573
10574
10575
10576
10577
10578
10579
10580
10581
10582
10583
10584
10585
10586
10587
10588
10589
10590
10591
10592
10593
10594
10595
10596
10597
10598
10599
10600
10601
10602
10603
10604
10605
10606
10607
10608
10609
10610
10611
10612
10613
10614
10615
10616
10617
10618
10619
10620
10621
10622
10623
10624
10625
10626
10627
10628
10629
10630
10631
10632
10633
10634
10635
10636
10637
10638
10639
10640
10641
10642
10643
10644
10645
10646
10647
10648
10649
10650
10651
10652
10653
10654
10655
10656
10657
10658
10659
10660
10661
10662
10663
10664
10665
10666
10667
10668
10669
10670
10671
10672
10673
10674
10675
10676
10677
10678
10679
10680
10681
10682
10683
10684
10685
10686
10687
10688
10689
10690
10691
10692
10693
10694
10695
10696
10697
10698
10699
10700
10701
10702
10703
10704
10705
10706
10707
10708
10709
10710
10711
10712
10713
10714
10715
10716
10717
10718
10719
10720
10721
10722
10723
10724
10725
10726
10727
10728
10729
10730
10731
10732
10733
10734
10735
10736
10737
10738
10739
10740
10741
10742
10743
10744
10745
10746
10747
10748
10749
10750
10751
10752
10753
10754
10755
10756
10757
10758
10759
10760
10761
10762
10763
10764
10765
10766
10767
10768
10769
10770
10771
10772
10773
10774
10775
10776
10777
10778
10779
10780
10781
10782
10783
10784
10785
10786
10787
10788
10789
10790
10791
10792
10793
10794
10795
10796
10797
10798
10799
10800
10801
10802
10803
10804
10805
10806
10807
10808
10809
10810
10811
10812
10813
10814
10815
10816
10817
10818
10819
10820
10821
10822
10823
10824
10825
10826
10827
10828
10829
10830
10831
10832
10833
10834
10835
10836
10837
10838
10839
10840
10841
10842
10843
10844
10845
10846
10847
10848
10849
10850
10851
10852
10853
10854
10855
10856
10857
10858
10859
10860
10861
10862
10863
10864
10865
10866
10867
10868
10869
10870
10871
10872
10873
10874
10875
10876
10877
10878
10879
10880
10881
10882
10883
10884
10885
10886
10887
10888
10889
10890
10891
10892
10893
10894
10895
10896
10897
10898
10899
10900
10901
10902
10903
10904
10905
10906
10907
10908
10909
10910
10911
10912
10913
10914
10915
10916
10917
10918
10919
10920
10921
10922
10923
10924
10925
10926
10927
10928
10929
10930
10931
10932
10933
10934
10935
10936
10937
10938
10939
10940
10941
10942
10943
10944
10945
10946
10947
10948
10949
10950
10951
10952
10953
10954
10955
10956
10957
10958
10959
10960
10961
10962
10963
10964
10965
10966
10967
10968
10969
10970
10971
10972
10973
10974
10975
10976
10977
10978
10979
10980
10981
10982
10983
10984
10985
10986
10987
10988
10989
10990
10991
10992
10993
10994
10995
10996
10997
10998
10999
11000
11001
11002
11003
11004
11005
11006
11007
11008
11009
11010
11011
11012
11013
11014
11015
11016
11017
11018
11019
11020
11021
11022
11023
11024
11025
11026
11027
11028
11029
11030
11031
11032
11033
11034
11035
11036
11037
11038
11039
11040
11041
11042
11043
11044
11045
11046
11047
11048
11049
11050
11051
11052
11053
11054
11055
11056
11057
11058
11059
11060
11061
11062
11063
11064
11065
11066
11067
11068
11069
11070
11071
11072
11073
11074
11075
11076
11077
11078
11079
11080
11081
11082
11083
11084
11085
11086
11087
11088
11089
11090
11091
11092
11093
11094
11095
11096
11097
11098
11099
11100
11101
11102
11103
11104
11105
11106
11107
11108
11109
11110
11111
11112
11113
11114
11115
11116
11117
11118
11119
11120
11121
11122
11123
11124
11125
11126
11127
11128
11129
11130
11131
11132
11133
11134
11135
11136
11137
11138
11139
11140
11141
11142
11143
11144
11145
11146
11147
11148
11149
11150
11151
11152
11153
11154
11155
11156
11157
11158
11159
11160
11161
11162
11163
11164
11165
11166
11167
11168
11169
11170
11171
11172
11173
11174
11175
11176
11177
11178
11179
11180
11181
11182
11183
11184
11185
11186
11187
11188
11189
11190
11191
11192
11193
11194
11195
11196
11197
11198
11199
11200
11201
11202
11203
11204
11205
11206
11207
11208
11209
11210
11211
11212
11213
11214
11215
11216
11217
11218
11219
11220
11221
11222
11223
11224
11225
11226
11227
11228
11229
11230
11231
11232
11233
11234
11235
11236
11237
11238
11239
11240
11241
11242
11243
11244
11245
11246
11247
11248
11249
11250
11251
11252
11253
11254
11255
11256
11257
11258
11259
11260
11261
11262
11263
11264
11265
11266
11267
11268
11269
11270
11271
11272
11273
11274
11275
11276
11277
11278
11279
11280
11281
11282
11283
11284
11285
11286
11287
11288
11289
11290
11291
11292
11293
11294
11295
11296
11297
11298
11299
11300
11301
11302
11303
11304
11305
11306
11307
11308
11309
11310
11311
11312
11313
11314
11315
11316
11317
11318
11319
11320
11321
11322
11323
11324
11325
11326
11327
11328
11329
11330
11331
11332
11333
11334
11335
11336
11337
11338
11339
11340
11341
11342
11343
11344
11345
11346
11347
11348
11349
11350
11351
11352
11353
11354
11355
11356
11357
11358
11359
11360
11361
11362
11363
11364
11365
11366
11367
11368
11369
11370
11371
11372
11373
11374
11375
11376
11377
11378
11379
11380
11381
11382
11383
11384
11385
11386
11387
11388
11389
11390
11391
11392
11393
11394
11395
11396
11397
11398
11399
11400
11401
11402
11403
11404
11405
11406
11407
11408
11409
11410
11411
11412
11413
11414
11415
11416
11417
11418
11419
11420
11421
11422
11423
11424
11425
11426
11427
11428
11429
11430
11431
11432
11433
11434
11435
11436
11437
11438
11439
11440
11441
11442
11443
11444
11445
11446
11447
11448
11449
11450
11451
11452
11453
11454
11455
11456
11457
11458
11459
11460
11461
11462
11463
11464
11465
11466
11467
11468
11469
11470
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
11495
11496
11497
11498
11499
11500
11501
11502
11503
11504
11505
11506
11507
11508
11509
11510
11511
11512
11513
11514
11515
11516
11517
11518
11519
11520
11521
11522
11523
11524
11525
11526
11527
11528
11529
11530
11531
11532
11533
11534
11535
11536
11537
11538
11539
11540
11541
11542
11543
11544
11545
11546
11547
11548
11549
11550
11551
11552
11553
11554
11555
11556
11557
11558
11559
11560
11561
11562
11563
11564
11565
11566
11567
11568
11569
11570
11571
11572
11573
11574
11575
11576
11577
11578
11579
11580
11581
11582
11583
11584
11585
11586
11587
11588
11589
11590
11591
11592
11593
11594
11595
11596
11597
11598
11599
11600
11601
11602
11603
11604
11605
11606
11607
11608
11609
11610
11611
11612
11613
11614
11615
11616
11617
11618
11619
11620
11621
11622
11623
11624
11625
11626
11627
11628
11629
11630
11631
11632
11633
11634
11635
11636
11637
11638
11639
11640
11641
11642
11643
11644
11645
11646
11647
11648
11649
11650
11651
11652
11653
11654
11655
11656
11657
11658
11659
11660
11661
11662
11663
11664
11665
11666
11667
11668
11669
11670
11671
11672
11673
11674
11675
11676
11677
11678
11679
11680
11681
11682
11683
11684
11685
11686
11687
11688
11689
11690
11691
11692
11693
11694
11695
11696
11697
11698
11699
11700
11701
11702
11703
11704
11705
11706
11707
11708
11709
11710
11711
11712
11713
11714
11715
11716
11717
11718
11719
11720
11721
11722
11723
11724
11725
11726
11727
11728
11729
11730
11731
11732
11733
11734
11735
11736
11737
11738
11739
11740
11741
11742
11743
11744
11745
11746
11747
11748
11749
11750
11751
11752
11753
11754
11755
11756
11757
11758
11759
11760
11761
11762
11763
11764
11765
11766
11767
11768
11769
11770
11771
11772
11773
11774
11775
11776
11777
11778
11779
11780
11781
11782
11783
11784
11785
11786
11787
11788
11789
11790
11791
11792
11793
11794
11795
11796
11797
11798
11799
11800
11801
11802
11803
11804
11805
11806
11807
11808
11809
11810
11811
11812
11813
11814
11815
11816
11817
11818
11819
11820
11821
11822
11823
11824
11825
11826
11827
11828
11829
11830
11831
11832
11833
11834
11835
11836
11837
11838
11839
11840
11841
11842
11843
11844
11845
11846
11847
11848
11849
11850
11851
11852
11853
11854
11855
11856
11857
11858
11859
11860
11861
11862
11863
11864
11865
11866
11867
11868
11869
11870
11871
11872
11873
11874
11875
11876
11877
11878
11879
11880
11881
11882
11883
11884
11885
11886
11887
11888
11889
11890
11891
11892
11893
11894
11895
11896
11897
11898
11899
11900
11901
11902
11903
11904
11905
11906
11907
11908
11909
11910
11911
11912
11913
11914
11915
11916
11917
11918
11919
11920
11921
11922
11923
11924
11925
11926
11927
11928
11929
11930
11931
11932
11933
11934
11935
11936
11937
11938
11939
11940
11941
11942
11943
11944
11945
11946
11947
11948
11949
11950
11951
11952
11953
11954
11955
11956
11957
11958
11959
11960
11961
11962
11963
11964
11965
11966
11967
11968
11969
11970
11971
11972
11973
11974
11975
11976
11977
11978
11979
11980
11981
11982
11983
11984
11985
11986
11987
11988
11989
11990
11991
11992
11993
11994
11995
11996
11997
11998
11999
12000
12001
12002
12003
12004
12005
12006
12007
12008
12009
12010
12011
12012
12013
12014
12015
12016
12017
12018
12019
12020
12021
12022
12023
12024
12025
12026
12027
12028
12029
12030
12031
12032
12033
12034
12035
12036
12037
12038
12039
12040
12041
12042
12043
12044
12045
12046
12047
12048
12049
12050
12051
12052
12053
12054
12055
12056
12057
12058
12059
12060
12061
12062
12063
12064
12065
12066
12067
12068
12069
12070
12071
12072
12073
12074
12075
12076
12077
12078
12079
12080
12081
12082
12083
12084
12085
12086
12087
12088
12089
12090
12091
12092
12093
12094
12095
12096
12097
12098
12099
12100
12101
12102
12103
12104
12105
12106
12107
12108
12109
12110
12111
12112
12113
12114
12115
12116
12117
12118
12119
12120
12121
12122
12123
12124
12125
12126
12127
12128
12129
12130
12131
12132
12133
12134
12135
12136
12137
12138
12139
12140
12141
12142
12143
12144
12145
12146
12147
12148
12149
12150
12151
12152
12153
12154
12155
12156
12157
12158
12159
12160
12161
12162
12163
12164
12165
12166
12167
12168
12169
12170
12171
12172
12173
12174
12175
12176
12177
12178
12179
12180
12181
12182
12183
12184
12185
12186
12187
12188
12189
12190
12191
12192
12193
12194
12195
12196
12197
12198
12199
12200
12201
12202
12203
12204
12205
12206
12207
12208
12209
12210
12211
12212
12213
12214
12215
12216
12217
12218
12219
12220
12221
12222
12223
12224
12225
12226
12227
12228
12229
12230
12231
12232
12233
12234
12235
12236
12237
12238
12239
12240
12241
12242
12243
12244
12245
12246
12247
12248
12249
12250
12251
12252
12253
12254
12255
12256
12257
12258
12259
12260
12261
12262
12263
12264
12265
12266
12267
12268
12269
12270
12271
12272
12273
12274
12275
12276
12277
12278
12279
12280
12281
12282
12283
12284
12285
12286
12287
12288
12289
12290
12291
12292
12293
12294
12295
12296
12297
12298
12299
12300
12301
12302
12303
12304
12305
12306
12307
12308
12309
12310
12311
12312
12313
12314
12315
12316
12317
12318
12319
12320
12321
12322
12323
12324
12325
12326
12327
12328
12329
12330
12331
12332
12333
12334
12335
12336
12337
12338
12339
12340
12341
12342
12343
12344
12345
12346
12347
12348
12349
12350
12351
12352
12353
12354
12355
12356
12357
12358
12359
12360
12361
12362
12363
12364
12365
12366
12367
12368
12369
12370
12371
12372
12373
12374
12375
12376
12377
12378
12379
12380
12381
12382
12383
12384
12385
12386
12387
12388
12389
12390
12391
12392
12393
12394
12395
12396
12397
12398
12399
12400
12401
12402
12403
12404
12405
12406
12407
12408
12409
12410
12411
12412
12413
12414
12415
12416
12417
12418
12419
12420
12421
12422
12423
12424
12425
12426
12427
12428
12429
12430
12431
12432
12433
12434
12435
12436
12437
12438
12439
12440
12441
12442
12443
12444
12445
12446
12447
12448
12449
12450
12451
12452
12453
12454
12455
12456
12457
12458
12459
12460
12461
12462
12463
12464
12465
12466
12467
12468
12469
12470
12471
12472
12473
12474
12475
12476
12477
12478
12479
12480
12481
12482
12483
12484
12485
12486
12487
12488
12489
12490
12491
12492
12493
12494
12495
12496
12497
12498
12499
12500
12501
12502
12503
12504
12505
12506
12507
12508
12509
12510
12511
12512
12513
12514
12515
12516
12517
12518
12519
12520
12521
12522
12523
12524
12525
12526
12527
12528
12529
12530
12531
12532
12533
12534
12535
12536
12537
12538
12539
12540
12541
12542
12543
12544
12545
12546
12547
12548
12549
12550
12551
12552
12553
12554
12555
12556
12557
12558
12559
12560
12561
12562
12563
12564
12565
12566
12567
12568
12569
12570
12571
12572
12573
12574
12575
12576
12577
12578
12579
12580
12581
12582
12583
12584
12585
12586
12587
12588
12589
12590
12591
12592
12593
12594
12595
12596
12597
12598
12599
12600
12601
12602
12603
12604
12605
12606
12607
12608
12609
12610
12611
12612
12613
12614
12615
12616
12617
12618
12619
12620
12621
12622
12623
12624
12625
12626
12627
12628
12629
12630
12631
12632
12633
12634
12635
12636
12637
12638
12639
12640
12641
12642
12643
12644
12645
12646
12647
12648
12649
12650
12651
12652
12653
12654
12655
12656
12657
12658
12659
12660
12661
12662
12663
12664
12665
12666
12667
12668
12669
12670
12671
12672
12673
12674
12675
12676
12677
12678
12679
12680
12681
12682
12683
12684
12685
12686
12687
12688
12689
12690
12691
12692
12693
12694
12695
12696
12697
12698
12699
12700
12701
12702
12703
12704
12705
12706
12707
12708
12709
12710
12711
12712
12713
12714
12715
12716
12717
12718
12719
12720
12721
12722
12723
12724
12725
12726
12727
12728
12729
12730
12731
12732
12733
12734
12735
12736
12737
12738
12739
12740
12741
12742
12743
12744
12745
12746
12747
12748
12749
12750
12751
12752
12753
12754
12755
12756
12757
12758
12759
12760
12761
12762
12763
12764
12765
12766
12767
12768
12769
12770
12771
12772
12773
12774
12775
12776
12777
12778
12779
12780
12781
12782
12783
12784
12785
12786
12787
12788
12789
12790
12791
12792
12793
12794
12795
12796
12797
12798
12799
12800
12801
12802
12803
12804
12805
12806
12807
12808
12809
12810
12811
12812
12813
12814
12815
12816
12817
12818
12819
12820
12821
12822
12823
12824
12825
12826
12827
12828
12829
12830
12831
12832
12833
12834
12835
12836
12837
12838
12839
12840
12841
12842
12843
12844
12845
12846
12847
12848
12849
12850
12851
12852
12853
12854
12855
12856
12857
12858
12859
12860
12861
12862
12863
12864
12865
12866
12867
12868
12869
12870
12871
12872
12873
12874
12875
12876
12877
12878
12879
12880
12881
12882
12883
12884
12885
12886
12887
12888
12889
12890
12891
12892
12893
12894
12895
12896
12897
12898
12899
12900
12901
12902
12903
12904
12905
12906
12907
12908
12909
12910
12911
12912
12913
12914
12915
12916
12917
12918
12919
12920
12921
12922
12923
12924
12925
12926
12927
12928
12929
12930
12931
12932
12933
12934
12935
12936
12937
12938
12939
12940
12941
12942
12943
12944
12945
12946
12947
12948
12949
12950
12951
12952
12953
12954
12955
12956
12957
12958
12959
12960
12961
12962
12963
12964
12965
12966
12967
12968
12969
12970
12971
12972
12973
12974
12975
12976
12977
12978
12979
12980
12981
12982
12983
12984
12985
12986
12987
12988
12989
12990
12991
12992
12993
12994
12995
12996
12997
12998
12999
13000
13001
13002
13003
13004
13005
13006
13007
13008
13009
13010
13011
13012
13013
13014
13015
13016
13017
13018
13019
13020
13021
13022
13023
13024
13025
13026
13027
13028
13029
13030
13031
13032
13033
13034
13035
13036
13037
13038
13039
13040
13041
13042
13043
13044
13045
13046
13047
13048
13049
13050
13051
13052
13053
13054
13055
13056
13057
13058
13059
13060
13061
13062
13063
13064
13065
13066
13067
13068
13069
13070
13071
13072
13073
13074
13075
13076
13077
13078
13079
13080
13081
13082
13083
13084
13085
13086
13087
13088
13089
13090
13091
13092
13093
13094
13095
13096
13097
13098
13099
13100
13101
13102
13103
13104
13105
13106
13107
13108
13109
13110
13111
13112
13113
13114
13115
13116
13117
13118
13119
13120
13121
13122
13123
13124
13125
13126
13127
13128
13129
13130
13131
13132
13133
13134
13135
13136
13137
13138
13139
13140
13141
13142
13143
13144
13145
13146
13147
13148
13149
13150
13151
13152
13153
13154
13155
13156
13157
13158
13159
13160
|
/*
* %CopyrightBegin%
*
* Copyright Ericsson AB 1997-2018. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* %CopyrightEnd%
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
/* If we HAVE_SCTP_H and Solaris, we need to define the following in
order to get SCTP working:
*/
#if (defined(HAVE_SCTP_H) && defined(__sun) && defined(__SVR4))
#define SOLARIS10 1
/* WARNING: This is not quite correct, it may also be Solaris 11! */
#define _XPG4_2
#define __EXTENSIONS__
#endif
#include <stdio.h>
#include <stdlib.h>
#include <stddef.h>
#include <ctype.h>
#include <sys/types.h>
#include <errno.h>
#define IDENTITY(c) c
#define STRINGIFY_1(b) IDENTITY(#b)
#define STRINGIFY(a) STRINGIFY_1(a)
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#ifdef HAVE_SYS_UIO_H
#include <sys/uio.h>
#endif
#ifdef HAVE_NET_IF_DL_H
#include <net/if_dl.h>
#endif
#ifdef HAVE_IFADDRS_H
#include <ifaddrs.h>
#endif
#ifdef HAVE_NETPACKET_PACKET_H
#include <netpacket/packet.h>
#endif
#ifdef HAVE_SYS_UN_H
#include <sys/un.h>
#endif
#ifdef HAVE_SENDFILE
#if defined(__linux__) || (defined(__sun) && defined(__SVR4))
#include <sys/sendfile.h>
#elif defined(__FreeBSD__) || defined(__DragonFly__)
/* Need to define __BSD_VISIBLE in order to expose prototype of sendfile */
#define __BSD_VISIBLE 1
#include <sys/socket.h>
#endif
#endif
#if defined(__APPLE__) && defined(__MACH__) && !defined(__DARWIN__)
#define __DARWIN__ 1
#endif
/* All platforms fail on malloc errors. */
#define FATAL_MALLOC
#include "erl_driver.h"
/* The IS_SOCKET_ERROR macro below is used for portability reasons. While
POSIX specifies that errors from socket-related system calls should be
indicated with a -1 return value, some users have experienced non-Windows
OS kernels that return negative values other than -1. While one can argue
that such kernels are technically broken, comparing against values less
than 0 covers their out-of-spec return values without imposing incorrect
semantics on systems that manage to correctly return -1 for errors, thus
increasing Erlang's portability.
*/
#ifdef __WIN32__
#define IS_SOCKET_ERROR(val) ((val) == SOCKET_ERROR)
#else
#define IS_SOCKET_ERROR(val) ((val) < 0)
#endif
#ifdef __WIN32__
#define LLU "%I64u"
#else
#define LLU "%llu"
#endif
typedef unsigned long long llu_t;
#ifndef INT16_MIN
#define INT16_MIN (-32768)
#endif
#ifndef INT16_MAX
#define INT16_MAX (32767)
#endif
#ifdef __WIN32__
#define STRNCASECMP strncasecmp
#define INCL_WINSOCK_API_TYPEDEFS 1
#ifndef WINDOWS_H_INCLUDES_WINSOCK2_H
#include <winsock2.h>
#endif
#include <windows.h>
#include <Ws2tcpip.h> /* NEED VC 6.0 or higher */
/* Visual studio 2008+: NTDDI_VERSION needs to be set for iphlpapi.h
to define the right structures. It needs to be set to WINXP (or LONGHORN)
for IPV6 to work and it's set lower by default, so we need to change it. */
#ifdef HAVE_SDKDDKVER_H
# include <sdkddkver.h>
# ifdef NTDDI_VERSION
# undef NTDDI_VERSION
# endif
# define NTDDI_VERSION NTDDI_WINXP
#endif
#include <iphlpapi.h>
#undef WANT_NONBLOCKING
#include "sys.h"
#undef EWOULDBLOCK
#undef ETIMEDOUT
#ifdef EINPROGRESS
#undef EINPROGRESS
#endif
#ifdef EALREADY
#undef EALREADY
#endif
#ifdef ENOTSOCK
#undef ENOTSOCK
#endif
#ifdef EDESTADDRREQ
#undef EDESTADDRREQ
#endif
#ifdef EMSGSIZE
#undef EMSGSIZE
#endif
#ifdef EPROTOTYPE
#undef EPROTOTYPE
#endif
#ifdef ENOPROTOOPT
#undef ENOPROTOOPT
#endif
#ifdef EPROTONOSUPPORT
#undef EPROTONOSUPPORT
#endif
#ifdef EOPNOTSUPP
#undef EOPNOTSUPP
#endif
#ifdef EAFNOSUPPORT
#undef EAFNOSUPPORT
#endif
#ifdef EADDRINUSE
#undef EADDRINUSE
#endif
#ifdef EADDRNOTAVAIL
#undef EADDRNOTAVAIL
#endif
#ifdef ENETDOWN
#undef ENETDOWN
#endif
#ifdef ENETUNREACH
#undef ENETUNREACH
#endif
#ifdef ENETRESET
#undef ENETRESET
#endif
#ifdef ECONNABORTED
#undef ECONNABORTED
#endif
#ifdef ECONNRESET
#undef ECONNRESET
#endif
#ifdef ENOBUFS
#undef ENOBUFS
#endif
#ifdef EISCONN
#undef EISCONN
#endif
#ifdef ENOTCONN
#undef ENOTCONN
#endif
#ifdef ECONNREFUSED
#undef ECONNREFUSED
#endif
#ifdef ELOOP
#undef ELOOP
#endif
#ifdef EHOSTUNREACH
#undef EHOSTUNREACH
#endif
#define HAVE_MULTICAST_SUPPORT
#define HAVE_UDP
#define ERRNO_BLOCK WSAEWOULDBLOCK
#define EWOULDBLOCK WSAEWOULDBLOCK
#define EINPROGRESS WSAEINPROGRESS
#define EALREADY WSAEALREADY
#define ENOTSOCK WSAENOTSOCK
#define EDESTADDRREQ WSAEDESTADDRREQ
#define EMSGSIZE WSAEMSGSIZE
#define EPROTOTYPE WSAEPROTOTYPE
#define ENOPROTOOPT WSAENOPROTOOPT
#define EPROTONOSUPPORT WSAEPROTONOSUPPORT
#define ESOCKTNOSUPPORT WSAESOCKTNOSUPPORT
#define EOPNOTSUPP WSAEOPNOTSUPP
#define EPFNOSUPPORT WSAEPFNOSUPPORT
#define EAFNOSUPPORT WSAEAFNOSUPPORT
#define EADDRINUSE WSAEADDRINUSE
#define EADDRNOTAVAIL WSAEADDRNOTAVAIL
#define ENETDOWN WSAENETDOWN
#define ENETUNREACH WSAENETUNREACH
#define ENETRESET WSAENETRESET
#define ECONNABORTED WSAECONNABORTED
#define ECONNRESET WSAECONNRESET
#define ENOBUFS WSAENOBUFS
#define EISCONN WSAEISCONN
#define ENOTCONN WSAENOTCONN
#define ESHUTDOWN WSAESHUTDOWN
#define ETOOMANYREFS WSAETOOMANYREFS
#define ETIMEDOUT WSAETIMEDOUT
#define ECONNREFUSED WSAECONNREFUSED
#define ELOOP WSAELOOP
#undef ENAMETOOLONG
#define ENAMETOOLONG WSAENAMETOOLONG
#define EHOSTDOWN WSAEHOSTDOWN
#define EHOSTUNREACH WSAEHOSTUNREACH
#undef ENOTEMPTY
#define ENOTEMPTY WSAENOTEMPTY
#define EPROCLIM WSAEPROCLIM
#define EUSERS WSAEUSERS
#define EDQUOT WSAEDQUOT
#define ESTALE WSAESTALE
#define EREMOTE WSAEREMOTE
#define INVALID_EVENT WSA_INVALID_EVENT
static BOOL (WINAPI *fpSetHandleInformation)(HANDLE,DWORD,DWORD);
#define sock_open(af, type, proto) \
make_noninheritable_handle(socket((af), (type), (proto)))
#define sock_close(s) closesocket((s))
#define sock_shutdown(s, how) shutdown((s), (how))
#define sock_accept(s, addr, len) \
make_noninheritable_handle(accept((s), (addr), (len)))
#define sock_connect(s, addr, len) connect((s), (addr), (len))
#define sock_listen(s, b) listen((s), (b))
#define sock_bind(s, addr, len) bind((s), (addr), (len))
#define sock_getopt(s,t,n,v,l) getsockopt((s),(t),(n),(v),(l))
#define sock_setopt(s,t,n,v,l) setsockopt((s),(t),(n),(v),(l))
#define sock_name(s, addr, len) getsockname((s), (addr), (len))
#define sock_peer(s, addr, len) getpeername((s), (addr), (len))
#define sock_ntohs(x) ntohs((x))
#define sock_ntohl(x) ntohl((x))
#define sock_htons(x) htons((x))
#define sock_htonl(x) htonl((x))
#define sock_send(s,buf,len,flag) send((s),(buf),(len),(flag))
#define sock_sendv(s, vec, size, np, flag) \
WSASend((s),(WSABUF*)(vec),(size),(np),(flag),NULL,NULL)
#define sock_recv(s,buf,len,flag) recv((s),(buf),(len),(flag))
#define sock_recvfrom(s,buf,blen,flag,addr,alen) \
recvfrom((s),(buf),(blen),(flag),(addr),(alen))
#define sock_sendto(s,buf,blen,flag,addr,alen) \
sendto((s),(buf),(blen),(flag),(addr),(alen))
#define sock_hostname(buf, len) gethostname((buf), (len))
#define sock_getservbyname(name,proto) getservbyname((name),(proto))
#define sock_getservbyport(port,proto) getservbyport((port),(proto))
#define sock_errno() WSAGetLastError()
#define sock_create_event(d) WSACreateEvent()
#define sock_close_event(e) WSACloseEvent(e)
#define sock_select(D, Flags, OnOff) winsock_event_select(D, Flags, OnOff)
#define SET_BLOCKING(s) ioctlsocket(s, FIONBIO, &zero_value)
#define SET_NONBLOCKING(s) ioctlsocket(s, FIONBIO, &one_value)
static unsigned long zero_value = 0;
static unsigned long one_value = 1;
#define TCP_SHUT_WR SD_SEND
#define TCP_SHUT_RD SD_RECEIVE
#define TCP_SHUT_RDWR SD_BOTH
#else /* !__WIN32__ */
#include <sys/time.h>
#ifdef NETDB_H_NEEDS_IN_H
#include <netinet/in.h>
#endif
#include <netdb.h>
#include <sys/socket.h>
#include <netinet/in.h>
#ifdef DEF_INADDR_LOOPBACK_IN_RPC_TYPES_H
#include <rpc/types.h>
#endif
#include <netinet/tcp.h>
#include <arpa/inet.h>
#include <sys/param.h>
#ifdef HAVE_ARPA_NAMESER_H
#include <arpa/nameser.h>
#endif
#ifdef HAVE_SYS_SOCKIO_H
#include <sys/sockio.h>
#endif
#ifdef HAVE_SYS_IOCTL_H
#include <sys/ioctl.h>
#endif
#include <net/if.h>
#ifdef HAVE_SCHED_H
#include <sched.h>
#endif
#ifdef HAVE_SETNS_H
#include <setns.h>
#endif
#define HAVE_UDP
/* SCTP support -- currently for UNIX platforms only: */
#undef HAVE_SCTP
#if defined(HAVE_SCTP_H)
#include <netinet/sctp.h>
/* SCTP Socket API Draft from version 11 on specifies that netinet/sctp.h must
explicitly define HAVE_SCTP in case when SCTP is supported, but Solaris 10
still apparently uses Draft 10, and does not define that symbol, so we have
to define it explicitly:
*/
#ifndef HAVE_SCTP
# define HAVE_SCTP
#endif
/* These changed in draft 11, so SOLARIS10 uses the old MSG_* */
#if ! HAVE_DECL_SCTP_UNORDERED
# define SCTP_UNORDERED MSG_UNORDERED
#endif
#if ! HAVE_DECL_SCTP_ADDR_OVER
# define SCTP_ADDR_OVER MSG_ADDR_OVER
#endif
#if ! HAVE_DECL_SCTP_ABORT
# define SCTP_ABORT MSG_ABORT
#endif
#if ! HAVE_DECL_SCTP_EOF
# define SCTP_EOF MSG_EOF
#endif
/* More Solaris 10 fixes: */
#if ! HAVE_DECL_SCTP_CLOSED && HAVE_DECL_SCTPS_IDLE
# define SCTP_CLOSED SCTPS_IDLE
# undef HAVE_DECL_SCTP_CLOSED
# define HAVE_DECL_SCTP_CLOSED 1
#endif
#if ! HAVE_DECL_SCTP_BOUND && HAVE_DECL_SCTPS_BOUND
# define SCTP_BOUND SCTPS_BOUND
# undef HAVE_DECL_SCTP_BOUND
# define HAVE_DECL_SCTP_BOUND 1
#endif
#if ! HAVE_DECL_SCTP_LISTEN && HAVE_DECL_SCTPS_LISTEN
# define SCTP_LISTEN SCTPS_LISTEN
# undef HAVE_DECL_SCTP_LISTEN
# define HAVE_DECL_SCTP_LISTEN 1
#endif
#if ! HAVE_DECL_SCTP_COOKIE_WAIT && HAVE_DECL_SCTPS_COOKIE_WAIT
# define SCTP_COOKIE_WAIT SCTPS_COOKIE_WAIT
# undef HAVE_DECL_SCTP_COOKIE_WAIT
# define HAVE_DECL_SCTP_COOKIE_WAIT 1
#endif
#if ! HAVE_DECL_SCTP_COOKIE_ECHOED && HAVE_DECL_SCTPS_COOKIE_ECHOED
# define SCTP_COOKIE_ECHOED SCTPS_COOKIE_ECHOED
# undef HAVE_DECL_SCTP_COOKIE_ECHOED
# define HAVE_DECL_SCTP_COOKIE_ECHOED 1
#endif
#if ! HAVE_DECL_SCTP_ESTABLISHED && HAVE_DECL_SCTPS_ESTABLISHED
# define SCTP_ESTABLISHED SCTPS_ESTABLISHED
# undef HAVE_DECL_SCTP_ESTABLISHED
# define HAVE_DECL_SCTP_ESTABLISHED 1
#endif
#if ! HAVE_DECL_SCTP_SHUTDOWN_PENDING && HAVE_DECL_SCTPS_SHUTDOWN_PENDING
# define SCTP_SHUTDOWN_PENDING SCTPS_SHUTDOWN_PENDING
# undef HAVE_DECL_SCTP_SHUTDOWN_PENDING
# define HAVE_DECL_SCTP_SHUTDOWN_PENDING 1
#endif
#if ! HAVE_DECL_SCTP_SHUTDOWN_SENT && HAVE_DECL_SCTPS_SHUTDOWN_SENT
# define SCTP_SHUTDOWN_SENT SCTPS_SHUTDOWN_SENT
# undef HAVE_DECL_SCTP_SHUTDOWN_SENT
# define HAVE_DECL_SCTP_SHUTDOWN_SENT 1
#endif
#if ! HAVE_DECL_SCTP_SHUTDOWN_RECEIVED && HAVE_DECL_SCTPS_SHUTDOWN_RECEIVED
# define SCTP_SHUTDOWN_RECEIVED SCTPS_SHUTDOWN_RECEIVED
# undef HAVE_DECL_SCTP_SHUTDOWN_RECEIVED
# define HAVE_DECL_SCTP_SHUTDOWN_RECEIVED 1
#endif
#if ! HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT && HAVE_DECL_SCTPS_SHUTDOWN_ACK_SENT
# define SCTP_SHUTDOWN_ACK_SENT SCTPS_SHUTDOWN_ACK_SENT
# undef HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT
# define HAVE_DECL_SCTP_SHUTDOWN_ACK_SENT 1
#endif
/* New spelling in lksctp 2.6.22 or maybe even earlier:
* adaption -> adaptation
*/
#if !defined(SCTP_ADAPTATION_LAYER) && defined (SCTP_ADAPTION_LAYER)
# define SCTP_ADAPTATION_LAYER SCTP_ADAPTION_LAYER
# define SCTP_ADAPTATION_INDICATION SCTP_ADAPTION_INDICATION
# define sctp_adaptation_event sctp_adaption_event
# define sctp_setadaptation sctp_setadaption
# define sn_adaptation_event sn_adaption_event
# define sai_adaptation_ind sai_adaption_ind
# define ssb_adaptation_ind ssb_adaption_ind
# define sctp_adaptation_layer_event sctp_adaption_layer_event
#endif
#if defined(__GNUC__) && defined(HAVE_SCTP_BINDX)
static typeof(sctp_bindx) *p_sctp_bindx = NULL;
#else
static int (*p_sctp_bindx)
(int sd, struct sockaddr *addrs, int addrcnt, int flags) = NULL;
#endif
#if defined(__GNUC__) && defined(HAVE_SCTP_PEELOFF)
static typeof(sctp_peeloff) *p_sctp_peeloff = NULL;
#else
static int (*p_sctp_peeloff)
(int sd, sctp_assoc_t assoc_id) = NULL;
#endif
#if defined(__GNUC__) && defined(HAVE_SCTP_GETLADDRS)
static typeof(sctp_getladdrs) *p_sctp_getladdrs = NULL;
#else
static int (*p_sctp_getladdrs)
(int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL;
#endif
#if defined(__GNUC__) && defined(HAVE_SCTP_FREELADDRS)
static typeof(sctp_freeladdrs) *p_sctp_freeladdrs = NULL;
#else
static void (*p_sctp_freeladdrs)(struct sockaddr *addrs) = NULL;
#endif
#if defined(__GNUC__) && defined(HAVE_SCTP_GETPADDRS)
static typeof(sctp_getpaddrs) *p_sctp_getpaddrs = NULL;
#else
static int (*p_sctp_getpaddrs)
(int sd, sctp_assoc_t assoc_id, struct sockaddr **ss) = NULL;
#endif
#if defined(__GNUC__) && defined(HAVE_SCTP_FREEPADDRS)
static typeof(sctp_freepaddrs) *p_sctp_freepaddrs = NULL;
#else
static void (*p_sctp_freepaddrs)(struct sockaddr *addrs) = NULL;
#endif
#endif /* #if defined(HAVE_SCTP_H) */
#ifndef WANT_NONBLOCKING
#define WANT_NONBLOCKING
#endif
#include "sys.h"
/* #define INET_DRV_DEBUG 1 */
#ifdef INET_DRV_DEBUG
#define DEBUG 1
#undef DEBUGF
#define DEBUGF(X) printf X
#endif
#if !defined(HAVE_STRNCASECMP)
#define STRNCASECMP my_strncasecmp
static int my_strncasecmp(const char *s1, const char *s2, size_t n)
{
int i;
for (i=0;i<n-1 && s1[i] && s2[i] && toupper(s1[i]) == toupper(s2[i]);++i)
;
return (toupper(s1[i]) - toupper(s2[i]));
}
#else
#define STRNCASECMP strncasecmp
#endif
#define INVALID_SOCKET -1
#define INVALID_EVENT -1
#define SOCKET_ERROR -1
#define SOCKET int
#define HANDLE long int
#define FD_READ ERL_DRV_READ
#define FD_WRITE ERL_DRV_WRITE
#define FD_CLOSE 0
#define FD_CONNECT ERL_DRV_WRITE
#define FD_ACCEPT ERL_DRV_READ
#define sock_connect(s, addr, len) connect((s), (addr), (len))
#define sock_listen(s, b) listen((s), (b))
#define sock_bind(s, addr, len) bind((s), (addr), (len))
#define sock_getopt(s,t,n,v,l) getsockopt((s),(t),(n),(v),(l))
#define sock_setopt(s,t,n,v,l) setsockopt((s),(t),(n),(v),(l))
#define sock_name(s, addr, len) getsockname((s), (addr), (len))
#define sock_peer(s, addr, len) getpeername((s), (addr), (len))
#define sock_ntohs(x) ntohs((x))
#define sock_ntohl(x) ntohl((x))
#define sock_htons(x) htons((x))
#define sock_htonl(x) htonl((x))
#define sock_accept(s, addr, len) accept((s), (addr), (len))
#define sock_send(s,buf,len,flag) send((s),(buf),(len),(flag))
#define sock_sendto(s,buf,blen,flag,addr,alen) \
sendto((s),(buf),(blen),(flag),(addr),(alen))
#define sock_sendv(s, vec, size, np, flag) \
(*(np) = writev((s), (struct iovec*)(vec), (size)))
#define sock_sendmsg(s,msghdr,flag) sendmsg((s),(msghdr),(flag))
#define sock_open(af, type, proto) socket((af), (type), (proto))
#define sock_close(s) close((s))
#define sock_shutdown(s, how) shutdown((s), (how))
#define sock_hostname(buf, len) gethostname((buf), (len))
#define sock_getservbyname(name,proto) getservbyname((name), (proto))
#define sock_getservbyport(port,proto) getservbyport((port), (proto))
#define sock_recv(s,buf,len,flag) recv((s),(buf),(len),(flag))
#define sock_recvfrom(s,buf,blen,flag,addr,alen) \
recvfrom((s),(buf),(blen),(flag),(addr),(alen))
#define sock_recvmsg(s,msghdr,flag) recvmsg((s),(msghdr),(flag))
#define sock_errno() errno
#define sock_create_event(d) ((d)->s) /* return file descriptor */
#define sock_close_event(e) /* do nothing */
#define inet_driver_select(port, e, mode, on) \
driver_select(port, e, mode | (on?ERL_DRV_USE:0), on)
#define sock_select(d, flags, onoff) do { \
ASSERT(!(d)->is_ignored); \
(d)->event_mask = (onoff) ? \
((d)->event_mask | (flags)) : \
((d)->event_mask & ~(flags)); \
DEBUGF(("(%s / %d) sock_select(%ld): flags=%02X, onoff=%d, event_mask=%02lX\r\n", \
__FILE__, __LINE__, (long) (d)->port, (flags), (onoff), (unsigned long) (d)->event_mask)); \
inet_driver_select((d)->port, (ErlDrvEvent)(long)(d)->event, (flags), (onoff)); \
} while(0)
#define TCP_SHUT_WR SHUT_WR
#define TCP_SHUT_RD SHUT_RD
#define TCP_SHUT_RDWR SHUT_RDWR
#endif /* !__WIN32__ */
#ifdef HAVE_SOCKLEN_T
# define SOCKLEN_T socklen_t
#else
# define SOCKLEN_T size_t
#endif
#include "packet_parser.h"
#define get_int24(s) ((((unsigned char*) (s))[0] << 16) | \
(((unsigned char*) (s))[1] << 8) | \
(((unsigned char*) (s))[2]))
#define get_little_int32(s) ((((unsigned char*) (s))[3] << 24) | \
(((unsigned char*) (s))[2] << 16) | \
(((unsigned char*) (s))[1] << 8) | \
(((unsigned char*) (s))[0]))
#if defined(HAVE_SYS_UN_H) || defined(SO_BINDTODEVICE)
/* strnlen doesn't exist everywhere */
static size_t my_strnlen(const char *s, size_t maxlen)
{
size_t i = 0;
while (i < maxlen && s[i] != '\0')
i++;
return i;
}
#endif
#ifdef VALGRIND
# include <valgrind/memcheck.h>
#else
# define VALGRIND_MAKE_MEM_DEFINED(ptr,size)
#endif
#ifndef __WIN32__
/* Calculate CMSG_NXTHDR without having a struct msghdr*.
* CMSG_LEN only caters for alignment for start of data.
* To get how much to advance we need to use CMSG_SPACE
* on the payload length. To get the payload length we
* take the calculated cmsg->cmsg_len and subtract the
* header length. To get the header length we use
* the pointer difference from the cmsg start pointer
* to the CMSG_DATA(cmsg) pointer.
*/
#define LEN_CMSG_DATA(cmsg) \
((cmsg)->cmsg_len - ((char*)CMSG_DATA(cmsg) - (char*)(cmsg)))
#define NXT_CMSG_HDR(cmsg) \
((struct cmsghdr*)(((char*)(cmsg)) + CMSG_SPACE(LEN_CMSG_DATA(cmsg))))
#endif
#if !defined(IPV6_PKTOPTIONS) && defined(IPV6_2292PKTOPTIONS)
#define IPV6_PKTOPTIONS IPV6_2292PKTOPTIONS
#endif
/*
Magic errno value used locally for return of {error, system_limit}
- the emulator definition of SYSTEM_LIMIT is not available here.
*/
#define INET_ERRNO_SYSTEM_LIMIT (15 << 8)
/*----------------------------------------------------------------------------
** Interface constants.
**
** This section must be "identical" to the corresponding inet_int.hrl
*/
/* general address encode/decode tag */
#define INET_AF_UNSPEC 0
#define INET_AF_INET 1
#define INET_AF_INET6 2
#define INET_AF_ANY 3 /* INADDR_ANY or IN6ADDR_ANY_INIT */
#define INET_AF_LOOPBACK 4 /* INADDR_LOOPBACK or IN6ADDR_LOOPBACK_INIT */
#define INET_AF_LOCAL 5
#define INET_AF_UNDEFINED 6 /* Unknown */
/* open and INET_REQ_GETTYPE enumeration */
#define INET_TYPE_STREAM 1
#define INET_TYPE_DGRAM 2
#define INET_TYPE_SEQPACKET 3
/* INET_LOPT_MODE options */
#define INET_MODE_LIST 0
#define INET_MODE_BINARY 1
/* INET_LOPT_DELIVER options */
#define INET_DELIVER_PORT 0
#define INET_DELIVER_TERM 1
/* INET_LOPT_ACTIVE options */
#define INET_PASSIVE 0 /* false */
#define INET_ACTIVE 1 /* true */
#define INET_ONCE 2 /* true; active once then passive */
#define INET_MULTI 3 /* true; active N then passive */
/* INET_REQ_GETSTATUS enumeration */
#define INET_F_OPEN 0x0001
/* INET_F_BOUND removed - renumber when there comes a bigger rewrite */
#define INET_F_ACTIVE 0x0004
#define INET_F_LISTEN 0x0008
#define INET_F_CON 0x0010
#define INET_F_ACC 0x0020
#define INET_F_LST 0x0040
#define INET_F_BUSY 0x0080
#define INET_F_MULTI_CLIENT 0x0100 /* Multiple clients for one descriptor, i.e. multi-accept */
/* One numberspace for *_REQ_* so if an e.g UDP request is issued
** for a TCP socket, the driver can protest.
*/
#define INET_REQ_OPEN 1
#define INET_REQ_CLOSE 2
#define INET_REQ_CONNECT 3
#define INET_REQ_PEER 4
#define INET_REQ_NAME 5
#define INET_REQ_BIND 6
#define INET_REQ_SETOPTS 7
#define INET_REQ_GETOPTS 8
/* #define INET_REQ_GETIX 9 NOT USED ANY MORE */
/* #define INET_REQ_GETIF 10 REPLACE BY NEW STUFF */
#define INET_REQ_GETSTAT 11
#define INET_REQ_GETHOSTNAME 12
#define INET_REQ_FDOPEN 13
#define INET_REQ_GETFD 14
#define INET_REQ_GETTYPE 15
#define INET_REQ_GETSTATUS 16
#define INET_REQ_GETSERVBYNAME 17
#define INET_REQ_GETSERVBYPORT 18
#define INET_REQ_SETNAME 19
#define INET_REQ_SETPEER 20
#define INET_REQ_GETIFLIST 21
#define INET_REQ_IFGET 22
#define INET_REQ_IFSET 23
#define INET_REQ_SUBSCRIBE 24
#define INET_REQ_GETIFADDRS 25
#define INET_REQ_ACCEPT 26
#define INET_REQ_LISTEN 27
#define INET_REQ_IGNOREFD 28
#define INET_REQ_GETLADDRS 29
#define INET_REQ_GETPADDRS 30
/* TCP requests */
/* #define TCP_REQ_ACCEPT 40 MOVED */
/* #define TCP_REQ_LISTEN 41 MERGED */
#define TCP_REQ_RECV 42
#define TCP_REQ_UNRECV 43
#define TCP_REQ_SHUTDOWN 44
#define TCP_REQ_SENDFILE 45
/* UDP and SCTP requests */
#define PACKET_REQ_RECV 60 /* Common for UDP and SCTP */
/* #define SCTP_REQ_LISTEN 61 MERGED Different from TCP; not for UDP */
#define SCTP_REQ_BINDX 62 /* Multi-home SCTP bind */
#define SCTP_REQ_PEELOFF 63
/* INET_REQ_SUBSCRIBE sub-requests */
#define INET_SUBS_EMPTY_OUT_Q 1
/* TCP additional flags */
#define TCP_ADDF_DELAY_SEND 1
#define TCP_ADDF_CLOSE_SENT 2 /* Close sent (active mode only) */
#define TCP_ADDF_DELAYED_CLOSE_RECV 4 /* If receive fails, report {error,closed} (passive mode) */
#define TCP_ADDF_DELAYED_CLOSE_SEND 8 /* If send fails, report {error,closed} (passive mode) */
#define TCP_ADDF_PENDING_SHUT_WR 16 /* Call shutdown(sock, SHUT_WR) when queue empties */
#define TCP_ADDF_PENDING_SHUT_RDWR 32 /* Call shutdown(sock, SHUT_RDWR) when queue empties */
#define TCP_ADDF_PENDING_SHUTDOWN \
(TCP_ADDF_PENDING_SHUT_WR | TCP_ADDF_PENDING_SHUT_RDWR)
#define TCP_ADDF_SHOW_ECONNRESET 64 /* Tell user about incoming RST */
#define TCP_ADDF_DELAYED_ECONNRESET 128 /* An ECONNRESET error occurred on send or shutdown */
#define TCP_ADDF_SHUTDOWN_WR_DONE 256 /* A shutdown(sock, SHUT_WR) or SHUT_RDWR was made */
#define TCP_ADDF_LINGER_ZERO 512 /* Discard driver queue on port close */
#define TCP_ADDF_SENDFILE 1024 /* Send from an fd instead of the driver queue */
/* *_REQ_* replies */
#define INET_REP_ERROR 0
#define INET_REP_OK 1
#define INET_REP 2
/* INET_REQ_SETOPTS and INET_REQ_GETOPTS options */
#define INET_OPT_REUSEADDR 0 /* enable/disable local address reuse */
#define INET_OPT_KEEPALIVE 1 /* enable/disable keep connections alive */
#define INET_OPT_DONTROUTE 2 /* enable/disable routing for messages */
#define INET_OPT_LINGER 3 /* linger on close if data is present */
#define INET_OPT_BROADCAST 4 /* enable/disable transmission of broadcast */
#define INET_OPT_OOBINLINE 5 /* enable/disable out-of-band data in band */
#define INET_OPT_SNDBUF 6 /* set send buffer size */
#define INET_OPT_RCVBUF 7 /* set receive buffer size */
#define INET_OPT_PRIORITY 8 /* set priority */
#define INET_OPT_TOS 9 /* Set type of service */
#define TCP_OPT_NODELAY 10 /* don't delay send to coalesce packets */
#define UDP_OPT_MULTICAST_IF 11 /* set/get IP multicast interface */
#define UDP_OPT_MULTICAST_TTL 12 /* set/get IP multicast timetolive */
#define UDP_OPT_MULTICAST_LOOP 13 /* set/get IP multicast loopback */
#define UDP_OPT_ADD_MEMBERSHIP 14 /* add an IP group membership */
#define UDP_OPT_DROP_MEMBERSHIP 15 /* drop an IP group membership */
#define INET_OPT_IPV6_V6ONLY 16 /* IPv6 only socket, no mapped v4 addrs */
/* LOPT is local options */
#define INET_LOPT_BUFFER 20 /* min buffer size hint */
#define INET_LOPT_HEADER 21 /* list header size */
#define INET_LOPT_ACTIVE 22 /* enable/disable active receive */
#define INET_LOPT_PACKET 23 /* packet header type (TCP) */
#define INET_LOPT_MODE 24 /* list or binary mode */
#define INET_LOPT_DELIVER 25 /* port or term delivery */
#define INET_LOPT_EXITONCLOSE 26 /* exit port on active close or not ! */
#define INET_LOPT_TCP_HIWTRMRK 27 /* set local high watermark */
#define INET_LOPT_TCP_LOWTRMRK 28 /* set local low watermark */
/* 29 unused */
#define INET_LOPT_TCP_SEND_TIMEOUT 30 /* set send timeout */
#define INET_LOPT_TCP_DELAY_SEND 31 /* Delay sends until next poll */
#define INET_LOPT_PACKET_SIZE 32 /* Max packet size */
#define INET_LOPT_UDP_READ_PACKETS 33 /* Number of packets to read */
#define INET_OPT_RAW 34 /* Raw socket options */
#define INET_LOPT_TCP_SEND_TIMEOUT_CLOSE 35 /* auto-close on send timeout or not */
#define INET_LOPT_MSGQ_HIWTRMRK 36 /* set local msgq high watermark */
#define INET_LOPT_MSGQ_LOWTRMRK 37 /* set local msgq low watermark */
#define INET_LOPT_NETNS 38 /* Network namespace pathname */
#define INET_LOPT_TCP_SHOW_ECONNRESET 39 /* tell user about incoming RST */
#define INET_LOPT_LINE_DELIM 40 /* Line delimiting char */
#define INET_OPT_TCLASS 41 /* IPv6 transport class */
#define INET_OPT_BIND_TO_DEVICE 42 /* get/set network device the socket is bound to */
#define INET_OPT_RECVTOS 43 /* IP_RECVTOS ancillary data */
#define INET_OPT_RECVTCLASS 44 /* IPV6_RECVTCLASS ancillary data */
#define INET_OPT_PKTOPTIONS 45 /* IP(V6)_PKTOPTIONS get ancillary data */
#define INET_OPT_TTL 46 /* IP_TTL */
#define INET_OPT_RECVTTL 47 /* IP_RECVTTL ancillary data */
#define TCP_OPT_NOPUSH 48 /* super-Nagle, aka TCP_CORK */
/* SCTP options: a separate range, from 100: */
#define SCTP_OPT_RTOINFO 100
#define SCTP_OPT_ASSOCINFO 101
#define SCTP_OPT_INITMSG 102
#define SCTP_OPT_AUTOCLOSE 103
#define SCTP_OPT_NODELAY 104
#define SCTP_OPT_DISABLE_FRAGMENTS 105
#define SCTP_OPT_I_WANT_MAPPED_V4_ADDR 106
#define SCTP_OPT_MAXSEG 107
#define SCTP_OPT_SET_PEER_PRIMARY_ADDR 108
#define SCTP_OPT_PRIMARY_ADDR 109
#define SCTP_OPT_ADAPTATION_LAYER 110
#define SCTP_OPT_PEER_ADDR_PARAMS 111
#define SCTP_OPT_DEFAULT_SEND_PARAM 112
#define SCTP_OPT_EVENTS 113
#define SCTP_OPT_DELAYED_ACK_TIME 114
#define SCTP_OPT_STATUS 115
#define SCTP_OPT_GET_PEER_ADDR_INFO 116
/* INET_REQ_IFGET and INET_REQ_IFSET options */
#define INET_IFOPT_ADDR 1
#define INET_IFOPT_BROADADDR 2
#define INET_IFOPT_DSTADDR 3
#define INET_IFOPT_MTU 4
#define INET_IFOPT_NETMASK 5
#define INET_IFOPT_FLAGS 6
#define INET_IFOPT_HWADDR 7
/* INET_REQ_GETSTAT enumeration */
#define INET_STAT_RECV_CNT 1
#define INET_STAT_RECV_MAX 2
#define INET_STAT_RECV_AVG 3
#define INET_STAT_RECV_DVI 4
#define INET_STAT_SEND_CNT 5
#define INET_STAT_SEND_MAX 6
#define INET_STAT_SEND_AVG 7
#define INET_STAT_SEND_PND 8
#define INET_STAT_RECV_OCT 9 /* received octets */
#define INET_STAT_SEND_OCT 10 /* sent octets */
/* INET_IFOPT_FLAGS enumeration */
#define INET_IFF_UP 0x0001
#define INET_IFF_BROADCAST 0x0002
#define INET_IFF_LOOPBACK 0x0004
#define INET_IFF_POINTTOPOINT 0x0008
#define INET_IFF_RUNNING 0x0010
#define INET_IFF_MULTICAST 0x0020
/* Complement flags for turning them off */
#define INET_IFF_DOWN 0x0100
#define INET_IFF_NBROADCAST 0x0200
/* #define INET_IFF_NLOOPBACK 0x0400 */
#define INET_IFF_NPOINTTOPOINT 0x0800
/* #define INET_IFF_NRUNNING 0x1000 */
/* #define INET_IFF_NMULTICAST 0x2000 */
/* Flags for "sctp_sndrcvinfo". Used in a bitmask -- must be powers of 2:
** INET_REQ_SETOPTS:SCTP_OPT_DEFAULT_SEND_PARAM
*/
#define SCTP_FLAG_UNORDERED (1 /* am_unordered */)
#define SCTP_FLAG_ADDR_OVER (2 /* am_addr_over */)
#define SCTP_FLAG_ABORT (4 /* am_abort */)
#define SCTP_FLAG_EOF (8 /* am_eof */)
#define SCTP_FLAG_SNDALL (16 /* am_sndall, NOT YET IMPLEMENTED */)
/* Flags for "sctp_set_opts" (actually for SCTP_OPT_PEER_ADDR_PARAMS).
** These flags are also used in a bitmask, so they must be powers of 2:
*/
#define SCTP_FLAG_HB_ENABLE (1 /* am_hb_enable */)
#define SCTP_FLAG_HB_DISABLE (2 /* am_hb_disable */)
#define SCTP_FLAG_HB_DEMAND (4 /* am_hb_demand */)
#define SCTP_FLAG_PMTUD_ENABLE (8 /* am_pmtud_enable */)
#define SCTP_FLAG_PMTUD_DISABLE (16 /* am_pmtud_disable */)
#define SCTP_FLAG_SACDELAY_ENABLE (32 /* am_sackdelay_enable */)
#define SCTP_FLAG_SACDELAY_DISABLE (64 /* am_sackdelay_disable */)
/* Flags for recv_cmsgflags */
#define INET_CMSG_RECVTOS (1 << 0) /* am_recvtos, am_tos */
#define INET_CMSG_RECVTCLASS (1 << 1) /* am_recvtclass, am_tclass */
#define INET_CMSG_RECVTTL (1 << 2) /* am_recvttl, am_ttl */
/*
** End of interface constants.
**--------------------------------------------------------------------------*/
#define INET_STATE_CLOSED (0)
#define INET_STATE_OPEN (INET_F_OPEN)
#define INET_STATE_CONNECTED (INET_STATE_OPEN | INET_F_ACTIVE)
#define INET_STATE_LISTENING (INET_STATE_OPEN | INET_F_LISTEN)
#define INET_STATE_CONNECTING (INET_STATE_OPEN | INET_F_CON)
#define INET_STATE_ACCEPTING (INET_STATE_LISTENING | INET_F_ACC)
#define INET_STATE_MULTI_ACCEPTING (INET_STATE_ACCEPTING | INET_F_MULTI_CLIENT)
#define IS_OPEN(d) \
(((d)->state & INET_F_OPEN) == INET_F_OPEN)
#define IS_CONNECTED(d) \
(((d)->state & INET_STATE_CONNECTED) == INET_STATE_CONNECTED)
#define IS_CONNECTING(d) \
(((d)->state & INET_F_CON) == INET_F_CON)
#define IS_BUSY(d) \
(((d)->state & INET_F_BUSY) == INET_F_BUSY)
#define INET_MAX_OPT_BUFFER (64*1024)
#define INET_DEF_BUFFER 1460 /* default buffer size */
#define INET_MIN_BUFFER 1 /* internal min buffer */
#define INET_HIGH_WATERMARK (1024*8) /* 8k pending high => busy */
#define INET_LOW_WATERMARK (1024*4) /* 4k pending => allow more */
#define INET_HIGH_MSGQ_WATERMARK (1024*8) /* 8k pending high => busy */
#define INET_LOW_MSGQ_WATERMARK (1024*4) /* 4k pending => allow more */
#define INET_INFINITY 0xffffffff /* infinity value */
#define INET_MAX_ASYNC 1 /* max number of async queue ops */
/* INET_LOPT_UDP_PACKETS */
#define INET_PACKET_POLL 5 /* maximum number of packets to poll */
/* Max interface name */
#define INET_IFNAMSIZ 16
/* INET Ignore states */
#define INET_IGNORE_NONE 0
#define INET_IGNORE_READ (1 << 0)
#define INET_IGNORE_WRITE (1 << 1)
#define INET_IGNORE_PASSIVE (1 << 2)
/* Max length of Erlang Term Buffer (for outputting structured terms): */
#ifdef HAVE_SCTP
#define PACKET_ERL_DRV_TERM_DATA_LEN 512
#else
#ifndef __WIN32__
/* Assume we have recvmsg() and might need room for ancillary data */
#define PACKET_ERL_DRV_TERM_DATA_LEN 64
#else
#define PACKET_ERL_DRV_TERM_DATA_LEN 32
#endif
#endif
#if defined(TCP_CORK)
#define INET_TCP_NOPUSH TCP_CORK
#elif defined(TCP_NOPUSH) && !defined(__DARWIN__)
#define INET_TCP_NOPUSH TCP_NOPUSH
#endif
#define BIN_REALLOC_MARGIN(x) ((x)/4) /* 25% */
/* The general purpose sockaddr */
typedef union {
struct sockaddr sa;
struct sockaddr_in sai;
#ifdef HAVE_IN6
struct sockaddr_in6 sai6;
#endif
#ifdef HAVE_SYS_UN_H
struct sockaddr_un sal;
#endif
} inet_address;
#define inet_address_port(x) \
((((x)->sai.sin_family == AF_INET) || \
((x)->sai.sin_family == AF_INET6)) ? \
((x)->sai.sin_port) : -1)
#ifdef HAVE_SYS_UN_H
#define localaddrlen(data) \
((((unsigned char*)(data))[0] == INET_AF_LOCAL) ? \
(1 + 1 + ((unsigned char*)(data))[1]) : 1)
#else
#define localaddrlen(data) (1)
#endif
#if defined(HAVE_IN6) && defined(AF_INET6)
#define addrlen(data) \
((((unsigned char*)(data))[0] == INET_AF_INET) ? \
(1 + 2 + 4) : \
((((unsigned char*)(data))[0] == INET_AF_INET6) ? \
(1 + 2 + 16) : localaddrlen(data)))
#else
#define addrlen(data) \
((((unsigned char*)(data))[0] == INET_AF_INET) ? \
(1 + 2 + 4) : localaddrlen(data))
#endif
typedef struct _multi_timer_data {
ErlDrvTime when;
ErlDrvTermData caller;
void (*timeout_function)(ErlDrvData drv_data, ErlDrvTermData caller);
struct _multi_timer_data *next;
struct _multi_timer_data *prev;
} MultiTimerData;
static MultiTimerData *add_multi_timer(MultiTimerData **first, ErlDrvPort port,
ErlDrvTermData caller, unsigned timeout,
void (*timeout_fun)(ErlDrvData drv_data,
ErlDrvTermData caller));
static void fire_multi_timers(MultiTimerData **first, ErlDrvPort port,
ErlDrvData data);
static void remove_multi_timer(MultiTimerData **first, ErlDrvPort port, MultiTimerData *p);
static void tcp_inet_multi_timeout(ErlDrvData e, ErlDrvTermData caller);
static void clean_multi_timers(MultiTimerData **first, ErlDrvPort port);
typedef struct {
int id; /* id used to identify reply */
ErlDrvTermData caller; /* recipient of async reply */
int req; /* Request id (CONNECT/ACCEPT/RECV) */
union {
unsigned value; /* Request timeout (since op issued,not started) */
MultiTimerData *mtd;
} tmo;
ErlDrvMonitor monitor;
} inet_async_op;
typedef struct inet_async_multi_op_ {
inet_async_op op;
struct inet_async_multi_op_ *next;
} inet_async_multi_op;
typedef struct subs_list_ {
ErlDrvTermData subscriber;
struct subs_list_ *next;
} subs_list;
#define NO_PROCESS 0
#define NO_SUBSCRIBERS(SLP) ((SLP)->subscriber == NO_PROCESS)
static void send_to_subscribers(ErlDrvTermData, subs_list *, int,
ErlDrvTermData [], int);
static void free_subscribers(subs_list*);
static int save_subscriber(subs_list *, ErlDrvTermData);
typedef struct {
SOCKET s; /* the socket or INVALID_SOCKET if not open */
HANDLE event; /* Event handle (same as s in unix) */
long event_mask; /* current FD events */
#ifdef __WIN32__
long forced_events; /* Mask of events that are forcefully signalled
on windows see winsock_event_select
for details */
int send_would_block; /* Last send attempt failed with "WOULDBLOCK" */
#endif
ErlDrvPort port; /* the port identifier */
ErlDrvTermData dport; /* the port identifier as DriverTermData */
int state; /* status */
int prebound; /* only set when opened with inet_fdopen */
int mode; /* BINARY | LIST
(affect how to interpret hsz) */
int exitf; /* exit port on close or not */
int deliver; /* Delivery mode, TERM or PORT */
ErlDrvTermData caller; /* recipient of sync reply */
ErlDrvTermData busy_caller; /* recipient of sync reply when caller busy.
* Only valid while INET_F_BUSY. */
inet_async_op* oph; /* queue head or NULL */
inet_async_op* opt; /* queue tail or NULL */
inet_async_op op_queue[INET_MAX_ASYNC]; /* call queue */
int op_ref; /* queue reference generator */
int active; /* 0 = passive, 1 = active, 2 = active once */
Sint16 active_count; /* counter for {active,N} */
int stype; /* socket type:
SOCK_STREAM/SOCK_DGRAM/SOCK_SEQPACKET */
int sprotocol; /* socket protocol:
IPPROTO_TCP|IPPROTO_UDP|IPPROTO_SCTP */
int sfamily; /* address family */
enum PacketParseType htype; /* header type (TCP only?) */
unsigned int psize; /* max packet size (TCP only?) */
inet_address remote; /* remote address for connected sockets */
inet_address peer_addr; /* fake peer address */
inet_address name_addr; /* fake local address */
inet_address* peer_ptr; /* fake peername or NULL */
inet_address* name_ptr; /* fake sockname or NULL */
SOCKLEN_T peer_addr_len; /* fake peername size */
SOCKLEN_T name_addr_len; /* fake sockname size */
int bufsz; /* minimum buffer constraint */
unsigned int hsz; /* the list header size, -1 is large !!! */
/* statistics */
#ifdef ARCH_64
Uint64 recv_oct; /* number of received octets, 64 bits */
#else
Uint32 recv_oct[2]; /* number of received octets, 64 bits */
#endif
unsigned long recv_cnt; /* number of packets received */
unsigned long recv_max; /* maximum packet size received */
double recv_avg; /* average packet size received */
double recv_dvi; /* avarage deviation from avg_size */
#ifdef ARCH_64
Uint64 send_oct; /* number of octets sent, 64 bits */
#else
Uint32 send_oct[2]; /* number of octets sent, 64 bits */
#endif
char delimiter; /* Line delimiting character (def: '\n') */
unsigned long send_cnt; /* number of packets sent */
unsigned long send_max; /* maximum packet send */
double send_avg; /* average packet size sent */
subs_list empty_out_q_subs; /* Empty out queue subscribers */
int is_ignored; /* if a fd is ignored by the inet_drv.
This flag should be set to true when
the fd is used outside of inet_drv. */
#ifdef HAVE_SETNS
char *netns; /* Socket network namespace name
as full file path */
#endif
int recv_cmsgflags; /* Which ancillary data to expect */
} inet_descriptor;
#define TCP_MAX_PACKET_SIZE 0x4000000 /* 64 M */
#define MAX_VSIZE 16 /* Max number of entries allowed in an I/O
* vector sock_sendv().
*/
static int tcp_inet_init(void);
static void tcp_inet_stop(ErlDrvData);
static void tcp_inet_command(ErlDrvData, char*, ErlDrvSizeT);
static void tcp_inet_commandv(ErlDrvData, ErlIOVec*);
static void tcp_inet_flush(ErlDrvData drv_data);
static void tcp_inet_drv_input(ErlDrvData, ErlDrvEvent);
static void tcp_inet_drv_output(ErlDrvData data, ErlDrvEvent event);
static ErlDrvData tcp_inet_start(ErlDrvPort, char* command);
static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData, unsigned int,
char*, ErlDrvSizeT, char**, ErlDrvSizeT);
static void tcp_inet_timeout(ErlDrvData);
static void tcp_inet_process_exit(ErlDrvData, ErlDrvMonitor *);
static void inet_stop_select(ErlDrvEvent, void*);
static void inet_emergency_close(ErlDrvData);
#ifdef __WIN32__
static void tcp_inet_event(ErlDrvData, ErlDrvEvent);
static void find_dynamic_functions(void);
#endif
static struct erl_drv_entry tcp_inet_driver_entry =
{
tcp_inet_init, /* inet_init will add this driver !! */
tcp_inet_start,
tcp_inet_stop,
tcp_inet_command,
#ifdef __WIN32__
tcp_inet_event,
NULL,
#else
tcp_inet_drv_input,
tcp_inet_drv_output,
#endif
"tcp_inet",
NULL,
NULL,
tcp_inet_ctl,
tcp_inet_timeout,
tcp_inet_commandv,
NULL,
tcp_inet_flush,
NULL,
NULL,
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
ERL_DRV_FLAG_USE_PORT_LOCKING|ERL_DRV_FLAG_SOFT_BUSY,
NULL,
tcp_inet_process_exit,
inet_stop_select,
inet_emergency_close
};
#ifdef HAVE_UDP
static int packet_inet_init(void);
static void packet_inet_stop(ErlDrvData);
static void packet_inet_command(ErlDrvData, char*, ErlDrvSizeT);
static void packet_inet_drv_input(ErlDrvData data, ErlDrvEvent event);
static ErlDrvData udp_inet_start(ErlDrvPort, char* command);
#ifdef HAVE_SCTP
static ErlDrvData sctp_inet_start(ErlDrvPort, char* command);
#endif
static ErlDrvSSizeT packet_inet_ctl(ErlDrvData, unsigned int, char*,
ErlDrvSizeT, char**, ErlDrvSizeT);
static void packet_inet_timeout(ErlDrvData);
#ifdef __WIN32__
static void packet_inet_event(ErlDrvData, ErlDrvEvent);
static SOCKET make_noninheritable_handle(SOCKET s);
static int winsock_event_select(inet_descriptor *, int, int);
#endif
static struct erl_drv_entry udp_inet_driver_entry =
{
packet_inet_init, /* inet_init will add this driver !! */
udp_inet_start,
packet_inet_stop,
packet_inet_command,
#ifdef __WIN32__
packet_inet_event,
NULL,
#else
packet_inet_drv_input,
NULL,
#endif
"udp_inet",
NULL,
NULL,
packet_inet_ctl,
packet_inet_timeout,
NULL,
NULL,
NULL,
NULL,
NULL,
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
ERL_DRV_FLAG_USE_PORT_LOCKING,
NULL,
NULL,
inet_stop_select,
inet_emergency_close
};
#endif
#ifdef HAVE_SCTP
static struct erl_drv_entry sctp_inet_driver_entry =
{
packet_inet_init, /* inet_init will add this driver !! */
sctp_inet_start,
packet_inet_stop,
packet_inet_command,
#ifdef __WIN32__
packet_inet_event,
NULL,
#else
packet_inet_drv_input,
NULL,
#endif
"sctp_inet",
NULL,
NULL,
packet_inet_ctl,
packet_inet_timeout,
NULL,
NULL,
NULL,
NULL,
NULL,
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
ERL_DRV_FLAG_USE_PORT_LOCKING,
NULL,
NULL, /* process_exit */
inet_stop_select,
inet_emergency_close
};
#endif
typedef struct {
inet_descriptor inet; /* common data structure (DON'T MOVE) */
int high; /* high watermark */
int low; /* low watermark */
int send_timeout; /* timeout to use in send */
int send_timeout_close; /* auto-close socket on send_timeout */
int busy_on_send; /* busy on send with timeout! */
int i_bufsz; /* current input buffer size (<= bufsz) */
ErlDrvBinary* i_buf; /* current binary buffer */
char* i_ptr; /* current pos in buf */
char* i_ptr_start; /* packet start pos in buf */
int i_remain; /* remaining chars to read */
int tcp_add_flags;/* Additional TCP descriptor flags */
int http_state; /* 0 = response|request 1=headers fields */
inet_async_multi_op *multi_first;/* NULL == no multi-accept-queue, op is in ordinary queue */
inet_async_multi_op *multi_last;
MultiTimerData *mtd; /* Timer structures for multiple accept */
#ifdef HAVE_SENDFILE
struct {
ErlDrvSizeT ioq_skip; /* The number of bytes in the queue at the time
* sendfile was issued, which must be sent
* before issuing the sendfile call itself. */
int dup_file_fd; /* The file handle to send from; this is
* duplicated when sendfile is issued to
* reduce (but not eliminate) the impact of a
* nasty race, so we have to remember to close
* it. */
Uint64 bytes_sent;
Uint64 offset;
Uint64 length;
} sendfile;
#endif
} tcp_descriptor;
/* send function */
static int tcp_send(tcp_descriptor* desc, char* ptr, ErlDrvSizeT len);
static int tcp_sendv(tcp_descriptor* desc, ErlIOVec* ev);
static int tcp_recv(tcp_descriptor* desc, int request_len);
static int tcp_deliver(tcp_descriptor* desc, int len);
static int tcp_shutdown_error(tcp_descriptor* desc, int err);
static int tcp_inet_sendfile(tcp_descriptor* desc);
static int tcp_inet_output(tcp_descriptor* desc, HANDLE event);
static int tcp_inet_input(tcp_descriptor* desc, HANDLE event);
static void tcp_desc_close(tcp_descriptor*);
#ifdef HAVE_UDP
typedef struct {
inet_descriptor inet; /* common data structure (DON'T MOVE) */
int read_packets; /* Number of packets to read per invocation */
int i_bufsz; /* current input buffer size */
ErlDrvBinary* i_buf; /* current binary buffer */
char* i_ptr; /* current pos in buf */
} udp_descriptor;
static int packet_inet_input(udp_descriptor* udesc, HANDLE event);
#endif
/* convert descriptor pointer to inet_descriptor pointer */
#define INETP(d) (&(d)->inet)
#define NEW_ASYNC_ID(desc) ((desc)->op_ref++ & 0xffff)
/* check for transition from active to passive */
#define INET_CHECK_ACTIVE_TO_PASSIVE(inet) \
do { \
if ((inet)->active == INET_ONCE) \
(inet)->active = INET_PASSIVE; \
else if ((inet)->active == INET_MULTI && --((inet)->active_count) == 0) { \
(inet)->active = INET_PASSIVE; \
packet_passive_message(inet); \
} \
} while (0)
static ErlDrvTermData am_ok;
static ErlDrvTermData am_undefined;
static ErlDrvTermData am_unspec;
static ErlDrvTermData am_tcp;
static ErlDrvTermData am_error;
static ErlDrvTermData am_einval;
static ErlDrvTermData am_inet_async;
static ErlDrvTermData am_inet_reply;
static ErlDrvTermData am_timeout;
static ErlDrvTermData am_closed;
static ErlDrvTermData am_tcp_passive;
static ErlDrvTermData am_tcp_closed;
static ErlDrvTermData am_tcp_error;
static ErlDrvTermData am_empty_out_q;
static ErlDrvTermData am_ssl_tls;
#ifdef HAVE_UDP
static ErlDrvTermData am_udp;
static ErlDrvTermData am_udp_passive;
static ErlDrvTermData am_udp_error;
#endif
#ifdef HAVE_SYS_UN_H
static ErlDrvTermData am_local;
#endif
#ifndef __WIN32__
static ErlDrvTermData am_tos;
static ErlDrvTermData am_tclass;
static ErlDrvTermData am_ttl;
#endif
#ifdef HAVE_SCTP
static ErlDrvTermData am_sctp;
static ErlDrvTermData am_sctp_passive;
static ErlDrvTermData am_sctp_error;
static ErlDrvTermData am_true;
static ErlDrvTermData am_false;
static ErlDrvTermData am_buffer;
static ErlDrvTermData am_mode;
static ErlDrvTermData am_list;
static ErlDrvTermData am_binary;
static ErlDrvTermData am_active;
static ErlDrvTermData am_once;
static ErlDrvTermData am_multi;
static ErlDrvTermData am_buffer;
static ErlDrvTermData am_linger;
static ErlDrvTermData am_recbuf;
static ErlDrvTermData am_sndbuf;
static ErlDrvTermData am_reuseaddr;
static ErlDrvTermData am_dontroute;
static ErlDrvTermData am_priority;
static ErlDrvTermData am_recvtos;
static ErlDrvTermData am_recvtclass;
static ErlDrvTermData am_recvttl;
static ErlDrvTermData am_ipv6_v6only;
static ErlDrvTermData am_netns;
static ErlDrvTermData am_bind_to_device;
#endif
#ifdef HAVE_SENDFILE
static ErlDrvTermData am_sendfile;
#endif
static char str_eafnosupport[] = "eafnosupport";
static char str_einval[] = "einval";
/* special errors for bad ports and sequences */
#define EXBADPORT "exbadport"
#define EXBADSEQ "exbadseq"
static int inet_init(void);
static ErlDrvSSizeT ctl_reply(int, char*, ErlDrvSizeT, char**, ErlDrvSizeT);
struct erl_drv_entry inet_driver_entry =
{
inet_init, /* inet_init will add TCP, UDP and SCTP drivers */
NULL, /* start */
NULL, /* stop */
NULL, /* output */
NULL, /* ready_input */
NULL, /* ready_output */
"inet",
NULL,
NULL, /* handle */
NULL, /* control */
NULL, /* timeout */
NULL, /* outputv */
NULL, /* ready_async */
NULL, /* flush */
NULL, /* call */
NULL, /* event */
ERL_DRV_EXTENDED_MARKER,
ERL_DRV_EXTENDED_MAJOR_VERSION,
ERL_DRV_EXTENDED_MINOR_VERSION,
0,
NULL,
NULL,
NULL,
};
#if HAVE_IN6
# if ! defined(HAVE_IN6ADDR_ANY) || ! HAVE_IN6ADDR_ANY
# if HAVE_DECL_IN6ADDR_ANY_INIT
static const struct in6_addr in6addr_any = { { IN6ADDR_ANY_INIT } };
# else
static const struct in6_addr in6addr_any =
{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 } } };
# endif /* HAVE_IN6ADDR_ANY_INIT */
# endif /* ! HAVE_DECL_IN6ADDR_ANY */
# if ! defined(HAVE_IN6ADDR_LOOPBACK) || ! HAVE_IN6ADDR_LOOPBACK
# if HAVE_DECL_IN6ADDR_LOOPBACK_INIT
static const struct in6_addr in6addr_loopback =
{ { IN6ADDR_LOOPBACK_INIT } };
# else
static const struct in6_addr in6addr_loopback =
{ { { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 } } };
# endif /* HAVE_IN6ADDR_LOOPBACk_INIT */
# endif /* ! HAVE_DECL_IN6ADDR_LOOPBACK */
#endif /* HAVE_IN6 */
/* XXX: is this a driver interface function ??? */
void erts_exit(int n, char*, ...);
/*
* Malloc wrapper,
* we would like to change the behaviour for different
* systems here.
*/
#ifdef FATAL_MALLOC
static void *alloc_wrapper(ErlDrvSizeT size){
void *ret = driver_alloc(size);
if(ret == NULL)
erts_exit(ERTS_ERROR_EXIT,"Out of virtual memory in malloc (%s)", __FILE__);
return ret;
}
#define ALLOC(X) alloc_wrapper(X)
static void *realloc_wrapper(void *current, ErlDrvSizeT size){
void *ret = driver_realloc(current,size);
if(ret == NULL)
erts_exit(ERTS_ERROR_EXIT,"Out of virtual memory in realloc (%s)", __FILE__);
return ret;
}
#define REALLOC(X,Y) realloc_wrapper(X,Y)
#define FREE(P) driver_free((P))
#else /* FATAL_MALLOC */
#define ALLOC(X) driver_alloc((X))
#define REALLOC(X,Y) driver_realloc((X), (Y))
#define FREE(P) driver_free((P))
#endif /* FATAL_MALLOC */
#define INIT_ATOM(NAME) am_ ## NAME = driver_mk_atom(#NAME)
#define LOAD_ATOM_CNT 2
#define LOAD_ATOM(vec, i, atom) \
(((vec)[(i)] = ERL_DRV_ATOM), \
((vec)[(i)+1] = (atom)), \
((i)+LOAD_ATOM_CNT))
#define LOAD_INT_CNT 2
#define LOAD_INT(vec, i, val) \
(((vec)[(i)] = ERL_DRV_INT), \
((vec)[(i)+1] = (ErlDrvTermData)(val)), \
((i)+LOAD_INT_CNT))
#define LOAD_UINT_CNT 2
#define LOAD_UINT(vec, i, val) \
(((vec)[(i)] = ERL_DRV_UINT), \
((vec)[(i)+1] = (ErlDrvTermData)(val)), \
((i)+LOAD_UINT_CNT))
#define LOAD_PORT_CNT 2
#define LOAD_PORT(vec, i, port) \
(((vec)[(i)] = ERL_DRV_PORT), \
((vec)[(i)+1] = (port)), \
((i)+LOAD_PORT_CNT))
#define LOAD_PID_CNT 2
#define LOAD_PID(vec, i, pid) \
(((vec)[(i)] = ERL_DRV_PID), \
((vec)[(i)+1] = (pid)), \
((i)+LOAD_PID_CNT))
#define LOAD_BINARY_CNT 4
#define LOAD_BINARY(vec, i, bin, offs, len) \
(((vec)[(i)] = ERL_DRV_BINARY), \
((vec)[(i)+1] = (ErlDrvTermData)(bin)), \
((vec)[(i)+2] = (len)), \
((vec)[(i)+3] = (offs)), \
((i)+LOAD_BINARY_CNT))
#define LOAD_BUF2BINARY_CNT 3
#define LOAD_BUF2BINARY(vec, i, buf, len) \
(((vec)[(i)] = ERL_DRV_BUF2BINARY), \
((vec)[(i)+1] = (ErlDrvTermData)(buf)), \
((vec)[(i)+2] = (len)), \
((i)+LOAD_BUF2BINARY_CNT))
#define LOAD_STRING_CNT 3
#define LOAD_STRING(vec, i, str, len) \
(((vec)[(i)] = ERL_DRV_STRING), \
((vec)[(i)+1] = (ErlDrvTermData)(str)), \
((vec)[(i)+2] = (len)), \
((i)+LOAD_STRING_CNT))
#define LOAD_STRING_CONS_CNT 3
#define LOAD_STRING_CONS(vec, i, str, len) \
(((vec)[(i)] = ERL_DRV_STRING_CONS), \
((vec)[(i)+1] = (ErlDrvTermData)(str)), \
((vec)[(i)+2] = (len)), \
((i)+LOAD_STRING_CONS_CNT))
#define LOAD_TUPLE_CNT 2
#define LOAD_TUPLE(vec, i, size) \
(((vec)[(i)] = ERL_DRV_TUPLE), \
((vec)[(i)+1] = (size)), \
((i)+LOAD_TUPLE_CNT))
#define LOAD_NIL_CNT 1
#define LOAD_NIL(vec, i) \
(((vec)[(i)] = ERL_DRV_NIL), \
((i)+LOAD_NIL_CNT))
#define LOAD_LIST_CNT 2
#define LOAD_LIST(vec, i, size) \
(((vec)[(i)] = ERL_DRV_LIST), \
((vec)[(i)+1] = (size)), \
((i)+LOAD_LIST_CNT))
#ifdef HAVE_SCTP
/* "IS_SCTP": tells the difference between a UDP and an SCTP socket: */
# define IS_SCTP(desc)((desc)->sprotocol==IPPROTO_SCTP)
/* For AssocID, 4 bytes should be enough -- checked by "init": */
# define GET_ASSOC_ID get_int32
# define ASSOC_ID_LEN 4
# define LOAD_ASSOC_ID LOAD_UINT
# define LOAD_ASSOC_ID_CNT LOAD_UINT_CNT
#else
# define IS_SCTP(desc) 0
#endif
# define ANC_BUFF_SIZE INET_DEF_BUFFER/2 /* XXX: not very good... */
#ifdef HAVE_UDP
static int load_address(ErlDrvTermData* spec, int i, char* buf)
{
int n;
switch (*buf++) { /* Family */
case INET_AF_INET: {
for (n = 2; n < 2+4; n++) {
spec[i++] = ERL_DRV_INT;
spec[i++] = (ErlDrvTermData) ((unsigned char)buf[n]);
}
spec[i++] = ERL_DRV_TUPLE;
spec[i++] = 4;
spec[i++] = ERL_DRV_INT;
spec[i++] = (ErlDrvTermData) get_int16(buf);
break;
}
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6: {
for (n = 2; n < 2+16; n += 2) {
spec[i++] = ERL_DRV_INT;
spec[i++] = (ErlDrvTermData) get_int16(buf+n);
}
spec[i++] = ERL_DRV_TUPLE;
spec[i++] = 8;
spec[i++] = ERL_DRV_INT;
spec[i++] = (ErlDrvTermData) get_int16(buf);
break;
}
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL: {
int len = *(unsigned char*)buf++;
i = LOAD_ATOM(spec, i, am_local);
i = LOAD_BUF2BINARY(spec, i, buf, len);
spec[i++] = ERL_DRV_TUPLE;
spec[i++] = 2;
spec[i++] = ERL_DRV_INT;
spec[i++] = 0;
break;
}
#endif
case INET_AF_UNSPEC: {
i = LOAD_ATOM(spec, i, am_unspec);
i = LOAD_BUF2BINARY(spec, i, buf, 0);
spec[i++] = ERL_DRV_TUPLE;
spec[i++] = 2;
spec[i++] = ERL_DRV_INT;
spec[i++] = 0;
break;
}
default: { /* INET_AF_UNDEFINED */
i = LOAD_ATOM(spec, i, am_undefined);
i = LOAD_BUF2BINARY(spec, i, buf, 0);
spec[i++] = ERL_DRV_TUPLE;
spec[i++] = 2;
spec[i++] = ERL_DRV_INT;
spec[i++] = 0;
break;
}
}
return i;
}
#endif
#ifdef HAVE_SCTP
/* For SCTP, we often need to return {IP, Port} tuples: */
static int inet_get_address(char* dst, inet_address* src, unsigned int* len);
/* Max of {{int()*8},int()} | {{int()*4},int()} |
* {{'local',binary()},int()}
*/
#define LOAD_INET_GET_ADDRESS_CNT \
(8*LOAD_INT_CNT + LOAD_TUPLE_CNT + LOAD_INT_CNT + LOAD_TUPLE_CNT)
static int load_inet_get_address
(ErlDrvTermData* spec, int i, inet_descriptor* desc,
struct sockaddr_storage* addr)
{
/* The size of the buffer used to stringify the addr is the same as
that of "sockaddr_storage" itself: only their layout is different:
*/
unsigned int len = sizeof(struct sockaddr_storage);
unsigned int alen = len;
char abuf [len];
int res = inet_get_address(abuf, (inet_address*) addr, &alen);
ASSERT(res==0); (void)res;
/* Now "abuf" contains: Family(1b), Port(2b), IP(4|16b) */
/* NB: the following functions are safe to use, as they create tuples
of copied Ints on the "spec", and do not install any String pts --
a ptr to "abuf" would be dangling upon exiting this function: */
i = load_address(spec, i, abuf); /* IP,Port | Family,Addr */
i = LOAD_TUPLE (spec, i, 2);
return i;
}
/* Loading Boolean flags as Atoms: */
#define LOAD_BOOL_CNT LOAD_ATOM_CNT
#define LOAD_BOOL(spec, i, flag) \
LOAD_ATOM((spec), (i), (flag) ? am_true : am_false);
#endif /* HAVE_SCTP */
/* Assume a cache line size of 64 bytes */
#define INET_DRV_CACHE_LINE_SIZE ((ErlDrvUInt) 64)
#define INET_DRV_CACHE_LINE_MASK (INET_DRV_CACHE_LINE_SIZE - 1)
/*
** Binary Buffer Managment
** We keep a stack of usable buffers
*/
#define BUFFER_STACK_SIZE 14
#define BUFFER_STACK_MAX_MEM_SIZE (1024*1024)
ErlDrvTSDKey buffer_stack_key;
typedef struct {
int mem_size;
int pos;
ErlDrvBinary* stk[BUFFER_STACK_SIZE];
} InetDrvBufStkBase;
typedef struct {
InetDrvBufStkBase buf;
char align[(((sizeof(InetDrvBufStkBase) - 1) / INET_DRV_CACHE_LINE_SIZE) + 1)
* INET_DRV_CACHE_LINE_SIZE];
} InetDrvBufStk;
static InetDrvBufStk *get_bufstk(void)
{
InetDrvBufStk *bs = erl_drv_tsd_get(buffer_stack_key);
if (bs)
return bs;
bs = driver_alloc(sizeof(InetDrvBufStk)
+ INET_DRV_CACHE_LINE_SIZE - 1);
if (!bs)
return NULL;
if ((((ErlDrvUInt) bs) & INET_DRV_CACHE_LINE_MASK) != 0)
bs = ((InetDrvBufStk *)
((((ErlDrvUInt) bs) & ~INET_DRV_CACHE_LINE_MASK)
+ INET_DRV_CACHE_LINE_SIZE));
erl_drv_tsd_set(buffer_stack_key, bs);
bs->buf.pos = 0;
bs->buf.mem_size = 0;
ASSERT(bs == erl_drv_tsd_get(buffer_stack_key));
return bs;
}
static ErlDrvBinary* alloc_buffer(ErlDrvSizeT minsz)
{
InetDrvBufStk *bs = get_bufstk();
DEBUGF(("alloc_buffer: "LLU"\r\n", (llu_t)minsz));
if (bs && bs->buf.pos > 0) {
long size;
ErlDrvBinary* buf = bs->buf.stk[--bs->buf.pos];
size = buf->orig_size;
bs->buf.mem_size -= size;
ASSERT(0 <= bs->buf.mem_size
&& bs->buf.mem_size <= BUFFER_STACK_MAX_MEM_SIZE);
if (size >= minsz)
return buf;
driver_free_binary(buf);
}
ASSERT(!bs || bs->buf.pos != 0 || bs->buf.mem_size == 0);
return driver_alloc_binary(minsz);
}
/*#define CHECK_DOUBLE_RELEASE 1*/
#ifdef CHECK_DOUBLE_RELEASE
static void
check_double_release(InetDrvBufStk *bs, ErlDrvBinary* buf)
{
#ifdef __GNUC__
#warning CHECK_DOUBLE_RELEASE is enabled, this is a custom build emulator
#endif
int i;
for (i = 0; i < bs->buf.pos; ++i) {
if (bs->buf.stk[i] == buf) {
erts_exit(ERTS_ABORT_EXIT,
"Multiple buffer release in inet_drv, this "
"is a bug, save the core and send it to "
"[email protected]!");
}
}
}
#endif
static void release_buffer(ErlDrvBinary* buf)
{
InetDrvBufStk *bs;
long size;
DEBUGF(("release_buffer: %ld\r\n", (buf==NULL) ? 0 : buf->orig_size));
if (!buf)
return;
size = buf->orig_size;
if (size > BUFFER_STACK_MAX_MEM_SIZE)
goto free_binary;
bs = get_bufstk();
if (!bs
|| (bs->buf.mem_size + size > BUFFER_STACK_MAX_MEM_SIZE)
|| (bs->buf.pos >= BUFFER_STACK_SIZE)) {
free_binary:
driver_free_binary(buf);
}
else {
#ifdef CHECK_DOUBLE_RELEASE
check_double_release(bs, buf);
#endif
ASSERT(bs->buf.pos != 0 || bs->buf.mem_size == 0);
bs->buf.mem_size += size;
bs->buf.stk[bs->buf.pos++] = buf;
ASSERT(0 <= bs->buf.mem_size
&& bs->buf.mem_size <= BUFFER_STACK_MAX_MEM_SIZE);
}
}
#ifdef HAVE_UDP
static ErlDrvBinary* realloc_buffer(ErlDrvBinary* buf, ErlDrvSizeT newsz)
{
DEBUGF(("realloc_buffer: %ld -> %ld\r\n", (buf==NULL) ? 0 : buf->orig_size, newsz));
return driver_realloc_binary(buf, newsz);
}
#endif
/* use a TRICK, access the refc field to see if any one else has
* a ref to this buffer then call driver_free_binary else
* release_buffer instead
*/
static void free_buffer(ErlDrvBinary* buf)
{
DEBUGF(("free_buffer: %ld\r\n", (buf==NULL) ? 0 : buf->orig_size));
if (buf != NULL) {
if (driver_binary_get_refc(buf) == 1)
release_buffer(buf);
else
driver_free_binary(buf);
}
}
#ifdef __WIN32__
static ErlDrvData dummy_start(ErlDrvPort port, char* command)
{
return (ErlDrvData)port;
}
static ErlDrvSSizeT dummy_ctl(ErlDrvData data, unsigned int cmd,
char* buf, ErlDrvSizeT len, char** rbuf,
ErlDrvSizeT rsize)
{
static char error[] = "no_winsock2";
driver_failure_atom((ErlDrvPort)data, error);
return ctl_reply(INET_REP_ERROR, error, sizeof(error), rbuf, rsize);
}
static void dummy_command(ErlDrvData data, char* buf, ErlDrvSizeT len)
{
}
static struct erl_drv_entry dummy_tcp_driver_entry =
{
NULL, /* init */
dummy_start, /* start */
NULL, /* stop */
dummy_command, /* command */
NULL, /* input */
NULL, /* output */
"tcp_inet", /* name */
NULL,
NULL,
dummy_ctl,
NULL,
NULL
};
static struct erl_drv_entry dummy_udp_driver_entry =
{
NULL, /* init */
dummy_start, /* start */
NULL, /* stop */
dummy_command, /* command */
NULL, /* input */
NULL, /* output */
"udp_inet", /* name */
NULL,
NULL,
dummy_ctl,
NULL,
NULL
};
#ifdef HAVE_SCTP
static struct erl_drv_entry dummy_sctp_driver_entry =
{ /* Though there is no SCTP for Win32 yet... */
NULL, /* init */
dummy_start, /* start */
NULL, /* stop */
dummy_command, /* command */
NULL, /* input */
NULL, /* output */
"sctp_inet", /* name */
NULL,
NULL,
dummy_ctl,
NULL,
NULL
};
#endif
#endif
/* return lowercase string form of errno value */
static char *errno_str(int err)
{
switch (err) {
case INET_ERRNO_SYSTEM_LIMIT:
return "system_limit";
default:
return erl_errno_id(err);
}
}
/* general control reply function */
static ErlDrvSSizeT ctl_reply(int rep, char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
char* ptr;
if ((len+1) > rsize) {
ptr = ALLOC(len+1);
*rbuf = ptr;
}
else
ptr = *rbuf;
*ptr++ = rep;
memcpy(ptr, buf, len);
return len+1;
}
/* general control error reply function */
static ErlDrvSSizeT ctl_error(int err, char** rbuf, ErlDrvSizeT rsize)
{
char* s = errno_str(err);
return ctl_reply(INET_REP_ERROR, s, strlen(s), rbuf, rsize);
}
static ErlDrvSSizeT ctl_xerror(char* xerr, char** rbuf, ErlDrvSizeT rsize)
{
int n = strlen(xerr);
return ctl_reply(INET_REP_ERROR, xerr, n, rbuf, rsize);
}
static ErlDrvTermData error_atom(int err)
{
return driver_mk_atom(errno_str(err));
}
static void enq_old_multi_op(tcp_descriptor *desc, int id, int req,
ErlDrvTermData caller, MultiTimerData *timeout,
ErlDrvMonitor *monitorp)
{
inet_async_multi_op *opp;
opp = ALLOC(sizeof(inet_async_multi_op));
opp->op.id = id;
opp->op.caller = caller;
opp->op.req = req;
opp->op.tmo.mtd = timeout;
memcpy(&(opp->op.monitor), monitorp, sizeof(ErlDrvMonitor));
opp->next = NULL;
if (desc->multi_first == NULL) {
desc->multi_first = opp;
} else {
desc->multi_last->next = opp;
}
desc->multi_last = opp;
}
static void enq_multi_op(tcp_descriptor *desc, char *buf, int req,
ErlDrvTermData caller, MultiTimerData *timeout,
ErlDrvMonitor *monitorp)
{
int id = NEW_ASYNC_ID(INETP(desc));
enq_old_multi_op(desc,id,req,caller,timeout,monitorp);
if (buf != NULL)
put_int16(id, buf);
}
static int deq_multi_op(tcp_descriptor *desc, int *id_p, int *req_p,
ErlDrvTermData *caller_p, MultiTimerData **timeout_p,
ErlDrvMonitor *monitorp)
{
inet_async_multi_op *opp;
opp = desc->multi_first;
if (!opp) {
return -1;
}
desc->multi_first = opp->next;
if (desc->multi_first == NULL) {
desc->multi_last = NULL;
}
*id_p = opp->op.id;
*req_p = opp->op.req;
*caller_p = opp->op.caller;
if (timeout_p != NULL) {
*timeout_p = opp->op.tmo.mtd;
}
if (monitorp != NULL) {
memcpy(monitorp,&(opp->op.monitor),sizeof(ErlDrvMonitor));
}
FREE(opp);
return 0;
}
static int remove_multi_op(tcp_descriptor *desc, int *id_p, int *req_p,
ErlDrvTermData caller, MultiTimerData **timeout_p,
ErlDrvMonitor *monitorp)
{
inet_async_multi_op *opp, *slap;
for (opp = desc->multi_first, slap = NULL;
opp != NULL && opp->op.caller != caller;
slap = opp, opp = opp->next)
;
if (!opp) {
return -1;
}
if (slap == NULL) {
desc->multi_first = opp->next;
} else {
slap->next = opp->next;
}
if (desc->multi_last == opp) {
desc->multi_last = slap;
}
*id_p = opp->op.id;
*req_p = opp->op.req;
if (timeout_p != NULL) {
*timeout_p = opp->op.tmo.mtd;
}
if (monitorp != NULL) {
memcpy(monitorp,&(opp->op.monitor),sizeof(ErlDrvMonitor));
}
FREE(opp);
return 0;
}
/* setup a new async id + caller (format async_id into buf) */
static int enq_async_w_tmo(inet_descriptor* desc, char* buf, int req, unsigned timeout,
ErlDrvMonitor *monitorp)
{
int id = NEW_ASYNC_ID(desc);
inet_async_op* opp;
if ((opp = desc->oph) == NULL) /* queue empty */
opp = desc->oph = desc->opt = desc->op_queue;
else if (desc->oph == desc->opt) { /* queue full */
DEBUGF(("enq(%ld): queue full\r\n", (long)desc->port));
return -1;
}
opp->id = id;
opp->caller = driver_caller(desc->port);
opp->req = req;
opp->tmo.value = timeout;
if (monitorp != NULL) {
memcpy(&(opp->monitor),monitorp,sizeof(ErlDrvMonitor));
}
DEBUGF(("enq(%ld): %d %ld %d\r\n",
(long) desc->port, opp->id, opp->caller, opp->req));
opp++;
if (opp >= desc->op_queue + INET_MAX_ASYNC)
desc->oph = desc->op_queue;
else
desc->oph = opp;
if (buf != NULL)
put_int16(id, buf);
return 0;
}
static int enq_async(inet_descriptor* desc, char* buf, int req)
{
return enq_async_w_tmo(desc,buf,req,INET_INFINITY, NULL);
}
static int deq_async_w_tmo(inet_descriptor* desc, int* ap, ErlDrvTermData* cp,
int* rp, unsigned *tp, ErlDrvMonitor *monitorp)
{
inet_async_op* opp;
if ((opp = desc->opt) == NULL) { /* queue empty */
DEBUGF(("deq(%ld): queue empty\r\n", (long)desc->port));
return -1;
}
*ap = opp->id;
*cp = opp->caller;
*rp = opp->req;
if (tp != NULL) {
*tp = opp->tmo.value;
}
if (monitorp != NULL) {
memcpy(monitorp,&(opp->monitor),sizeof(ErlDrvMonitor));
}
DEBUGF(("deq(%ld): %d %ld %d\r\n",
(long)desc->port, opp->id, opp->caller, opp->req));
opp++;
if (opp >= desc->op_queue + INET_MAX_ASYNC)
desc->opt = desc->op_queue;
else
desc->opt = opp;
if (desc->opt == desc->oph)
desc->opt = desc->oph = NULL;
return 0;
}
static int deq_async(inet_descriptor* desc, int* ap, ErlDrvTermData* cp, int* rp)
{
return deq_async_w_tmo(desc,ap,cp,rp,NULL,NULL);
}
/* send message:
** {inet_async, Port, Ref, ok}
*/
static int
send_async_ok(ErlDrvTermData Port, int Ref,ErlDrvTermData recipient)
{
ErlDrvTermData spec[2*LOAD_ATOM_CNT + LOAD_PORT_CNT +
LOAD_INT_CNT + LOAD_TUPLE_CNT];
int i = 0;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, Port);
i = LOAD_INT(spec, i, Ref);
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i == sizeof(spec)/sizeof(*spec));
return erl_drv_send_term(Port, recipient, spec, i);
}
/* send message:
** {inet_async, Port, Ref, {ok,Port2}}
*/
static int
send_async_ok_port(ErlDrvTermData Port, int Ref,
ErlDrvTermData recipient, ErlDrvTermData Port2)
{
ErlDrvTermData spec[2*LOAD_ATOM_CNT + 2*LOAD_PORT_CNT +
LOAD_INT_CNT + 2*LOAD_TUPLE_CNT];
int i = 0;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, Port);
i = LOAD_INT(spec, i, Ref);
{
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_PORT(spec, i, Port2);
i = LOAD_TUPLE(spec, i, 2);
}
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i == sizeof(spec)/sizeof(*spec));
return erl_drv_send_term(Port, recipient, spec, i);
}
/* send message:
** {inet_async, Port, Ref, {error,Reason}}
*/
static int
send_async_error(ErlDrvTermData Port, int Ref,
ErlDrvTermData recipient, ErlDrvTermData Reason)
{
ErlDrvTermData spec[3*LOAD_ATOM_CNT + LOAD_PORT_CNT +
LOAD_INT_CNT + 2*LOAD_TUPLE_CNT];
int i = 0;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, Port);
i = LOAD_INT(spec, i, Ref);
{
i = LOAD_ATOM(spec, i, am_error);
i = LOAD_ATOM(spec, i, Reason);
i = LOAD_TUPLE(spec, i, 2);
}
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i == sizeof(spec)/sizeof(*spec));
DEBUGF(("send_async_error %ld %ld\r\n", recipient, Reason));
return erl_drv_send_term(Port, recipient, spec, i);
}
static int async_ok(inet_descriptor* desc)
{
int req;
int aid;
ErlDrvTermData caller;
if (deq_async(desc, &aid, &caller, &req) < 0)
return -1;
return send_async_ok(desc->dport, aid, caller);
}
static int async_ok_port(inet_descriptor* desc, ErlDrvTermData Port2)
{
int req;
int aid;
ErlDrvTermData caller;
if (deq_async(desc, &aid, &caller, &req) < 0)
return -1;
return send_async_ok_port(desc->dport, aid, caller, Port2);
}
static int async_error_am(inet_descriptor* desc, ErlDrvTermData reason)
{
int req;
int aid;
ErlDrvTermData caller;
if (deq_async(desc, &aid, &caller, &req) < 0)
return -1;
return send_async_error(desc->dport, aid, caller, reason);
}
/* dequeue all operations */
static int async_error_am_all(inet_descriptor* desc, ErlDrvTermData reason)
{
int req;
int aid;
ErlDrvTermData caller;
while (deq_async(desc, &aid, &caller, &req) == 0) {
send_async_error(desc->dport, aid, caller, reason);
}
return 0;
}
static int async_error(inet_descriptor* desc, int err)
{
return async_error_am(desc, error_atom(err));
}
/* send:
** {inet_reply, S, ok}
*/
static int inet_reply_ok(inet_descriptor* desc)
{
ErlDrvTermData spec[2*LOAD_ATOM_CNT + LOAD_PORT_CNT + LOAD_TUPLE_CNT];
ErlDrvTermData caller = desc->caller;
int i = 0;
desc->caller = 0;
if (is_not_internal_pid(caller))
return 0;
i = LOAD_ATOM(spec, i, am_inet_reply);
i = LOAD_PORT(spec, i, desc->dport);
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i == sizeof(spec)/sizeof(*spec));
return erl_drv_send_term(desc->dport, caller, spec, i);
}
#ifdef HAVE_SCTP
static int inet_reply_ok_port(inet_descriptor* desc, ErlDrvTermData dport)
{
ErlDrvTermData spec[2*LOAD_ATOM_CNT + 2*LOAD_PORT_CNT + 2*LOAD_TUPLE_CNT];
ErlDrvTermData caller = desc->caller;
int i = 0;
i = LOAD_ATOM(spec, i, am_inet_reply);
i = LOAD_PORT(spec, i, desc->dport);
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_PORT(spec, i, dport);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i == sizeof(spec)/sizeof(*spec));
desc->caller = 0;
return erl_drv_send_term(desc->dport, caller, spec, i);
}
#endif
/* send:
** {inet_reply, S, {error, Reason}}
*/
static int inet_reply_error_am(inet_descriptor* desc, ErlDrvTermData reason)
{
ErlDrvTermData spec[3*LOAD_ATOM_CNT + LOAD_PORT_CNT + 2*LOAD_TUPLE_CNT];
ErlDrvTermData caller = desc->caller;
int i = 0;
i = LOAD_ATOM(spec, i, am_inet_reply);
i = LOAD_PORT(spec, i, desc->dport);
i = LOAD_ATOM(spec, i, am_error);
i = LOAD_ATOM(spec, i, reason);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i == sizeof(spec)/sizeof(*spec));
desc->caller = 0;
DEBUGF(("inet_reply_error_am %ld %ld\r\n", caller, reason));
return erl_drv_send_term(desc->dport, caller, spec, i);
}
/* send:
** {inet_reply, S, {error, Reason}}
*/
static int inet_reply_error(inet_descriptor* desc, int err)
{
return inet_reply_error_am(desc, error_atom(err));
}
/*
** Deliver port data from buffer
*/
static int inet_port_data(inet_descriptor* desc, const char* buf, int len)
{
unsigned int hsz = desc->hsz;
DEBUGF(("inet_port_data(%ld): len = %d\r\n", (long)desc->port, len));
if ((desc->mode == INET_MODE_LIST) || (hsz > len))
return driver_output2(desc->port, (char*)buf, len, NULL, 0);
else if (hsz > 0)
return driver_output2(desc->port, (char*)buf, hsz, (char*)buf+hsz, len-hsz);
else
return driver_output(desc->port, (char*)buf, len);
}
/*
** Deliver port data from binary (for an active mode socket)
*/
static int
inet_port_binary_data(inet_descriptor* desc, ErlDrvBinary* bin, int offs, int len)
{
unsigned int hsz = desc->hsz;
DEBUGF(("inet_port_binary_data(%ld): offs=%d, len = %d\r\n",
(long)desc->port, offs, len));
if ((desc->mode == INET_MODE_LIST) || (hsz > len))
return driver_output2(desc->port, bin->orig_bytes+offs, len, NULL, 0);
else
return driver_output_binary(desc->port, bin->orig_bytes+offs, hsz,
bin, offs+hsz, len-hsz);
}
static ErlDrvTermData am_http_eoh;
static ErlDrvTermData am_http_header;
static ErlDrvTermData am_http_request;
static ErlDrvTermData am_http_response;
static ErlDrvTermData am_http_error;
static ErlDrvTermData am_abs_path;
static ErlDrvTermData am_absoluteURI;
static ErlDrvTermData am_star;
static ErlDrvTermData am_http;
static ErlDrvTermData am_https;
static ErlDrvTermData am_scheme;
static int http_load_string(tcp_descriptor* desc, ErlDrvTermData* spec, int i,
const char* str, int len)
{
if (desc->inet.htype >= TCP_PB_HTTP_BIN) {
ASSERT(desc->inet.htype == TCP_PB_HTTP_BIN ||
desc->inet.htype == TCP_PB_HTTPH_BIN);
i = LOAD_BUF2BINARY(spec, i, str, len);
} else {
i = LOAD_STRING(spec, i, str, len);
}
return i;
}
static int http_response_inetdrv(void *arg, int major, int minor,
int status, const char* phrase, int phrase_len)
{
tcp_descriptor* desc = (tcp_descriptor*) arg;
int i = 0;
ErlDrvTermData spec[27];
ErlDrvTermData caller = ERL_DRV_NIL;
if (desc->inet.active == INET_PASSIVE) {
/* {inet_async,S,Ref,{ok,{http_response,Version,Status,Phrase}}} */
int req;
int aid;
if (deq_async(INETP(desc), &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
}
else {
/* {http, S, {http_response,Version,Status,Phrase}} */
i = LOAD_ATOM(spec, i, am_http);
i = LOAD_PORT(spec, i, desc->inet.dport);
}
i = LOAD_ATOM(spec, i, am_http_response);
i = LOAD_INT(spec, i, major);
i = LOAD_INT(spec, i, minor);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_INT(spec, i, status);
i = http_load_string(desc, spec, i, phrase, phrase_len);
i = LOAD_TUPLE(spec, i, 4);
if (desc->inet.active == INET_PASSIVE) {
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i<=27);
return erl_drv_send_term(desc->inet.dport, caller, spec, i);
}
else {
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i<=27);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
}
static int http_load_uri(tcp_descriptor* desc, ErlDrvTermData* spec, int i,
const PacketHttpURI* uri)
{
ErlDrvTermData scheme;
switch (uri->type) {
case URI_STAR:
i = LOAD_ATOM(spec, i, am_star);
break;
case URI_ABS_PATH:
i = LOAD_ATOM(spec, i, am_abs_path);
i = http_load_string(desc, spec, i, uri->s1_ptr, uri->s1_len);
i = LOAD_TUPLE(spec, i, 2);
break;
case URI_HTTP:
scheme = am_http;
goto http_common;
case URI_HTTPS:
scheme = am_https;
http_common:
i = LOAD_ATOM(spec, i, am_absoluteURI);
i = LOAD_ATOM(spec, i, scheme);
i = http_load_string(desc, spec, i, uri->s1_ptr, uri->s1_len);
if (uri->port == 0) {
i = LOAD_ATOM(spec, i, am_undefined);
} else {
i = LOAD_INT(spec, i, uri->port);
}
i = http_load_string(desc, spec, i, uri->s2_ptr, uri->s2_len);
i = LOAD_TUPLE(spec, i, 5);
break;
case URI_STRING:
i = http_load_string(desc, spec, i, uri->s1_ptr, uri->s1_len);
break;
case URI_SCHEME:
i = LOAD_ATOM(spec, i, am_scheme);
i = http_load_string(desc, spec, i, uri->s1_ptr, uri->s1_len);
i = http_load_string(desc, spec, i, uri->s2_ptr, uri->s2_len);
i = LOAD_TUPLE(spec, i, 3);
}
return i;
}
static int
http_request_inetdrv(void* arg, const http_atom_t* meth, const char* meth_ptr,
int meth_len, const PacketHttpURI* uri,
int major, int minor)
{
tcp_descriptor* desc = (tcp_descriptor*) arg;
int i = 0;
ErlDrvTermData spec[43];
ErlDrvTermData caller = ERL_DRV_NIL;
if (desc->inet.active == INET_PASSIVE) {
/* {inet_async, S, Ref, {ok,{http_request,Meth,Uri,Version}}} */
int req;
int aid;
if (deq_async(INETP(desc), &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
}
else {
/* {http, S, {http_request,Meth,Uri,Version}}} */
i = LOAD_ATOM(spec, i, am_http);
i = LOAD_PORT(spec, i, desc->inet.dport);
}
i = LOAD_ATOM(spec, i, am_http_request);
if (meth != NULL)
i = LOAD_ATOM(spec, i, meth->atom);
else
i = http_load_string(desc, spec, i, meth_ptr, meth_len);
i = http_load_uri(desc, spec, i, uri);
i = LOAD_INT(spec, i, major);
i = LOAD_INT(spec, i, minor);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
if (desc->inet.active == INET_PASSIVE) {
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= 43);
return erl_drv_send_term(desc->inet.dport, caller, spec, i);
}
else {
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 43);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
}
static int
http_header_inetdrv(void* arg, const http_atom_t* name, const char* name_ptr,
int name_len, const char* value_ptr, int value_len)
{
tcp_descriptor* desc = (tcp_descriptor*) arg;
int i = 0;
ErlDrvTermData spec[26];
ErlDrvTermData caller = ERL_DRV_NIL;
if (desc->inet.active == INET_PASSIVE) {
/* {inet_async,S,Ref,{ok,{http_header,Bit,Name,IValue,Value}} */
int req;
int aid;
if (deq_async(INETP(desc), &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
}
else {
/* {http, S, {http_header,Bit,Name,IValue,Value}} */
i = LOAD_ATOM(spec, i, am_http);
i = LOAD_PORT(spec, i, desc->inet.dport);
}
i = LOAD_ATOM(spec, i, am_http_header);
if (name != NULL) {
i = LOAD_INT(spec, i, name->index+1);
i = LOAD_ATOM(spec, i, name->atom);
}
else {
i = LOAD_INT(spec, i, 0);
i = http_load_string(desc, spec, i, name_ptr, name_len);
}
i = LOAD_ATOM(spec, i, am_undefined);
i = http_load_string(desc, spec, i, value_ptr, value_len);
i = LOAD_TUPLE(spec, i, 5);
if (desc->inet.active == INET_PASSIVE) {
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= 26);
return erl_drv_send_term(desc->inet.dport, caller, spec, i);
}
else {
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 26);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
}
static int http_eoh_inetdrv(void* arg)
{
tcp_descriptor* desc = (tcp_descriptor*) arg;
int i = 0;
ErlDrvTermData spec[14];
if (desc->inet.active == INET_PASSIVE) {
/* {inet_async,S,Ref,{ok,http_eoh}} */
int req;
int aid;
ErlDrvTermData caller;
if (deq_async(INETP(desc), &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_ATOM(spec, i, am_http_eoh);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= 14);
return erl_drv_send_term(desc->inet.dport, caller, spec, i);
}
else {
/* {http, S, http_eoh} */
i = LOAD_ATOM(spec, i, am_http);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_ATOM(spec, i, am_http_eoh);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 14);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
}
static int http_error_inetdrv(void* arg, const char* buf, int len)
{
tcp_descriptor* desc = (tcp_descriptor*) arg;
int i = 0;
ErlDrvTermData spec[19];
if (desc->inet.active == INET_PASSIVE) {
/* {inet_async,S,Ref,{ok,{http_error,Line}}} */
int req;
int aid;
ErlDrvTermData caller;
if (deq_async(INETP(desc), &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_ATOM(spec, i, am_http_error);
i = http_load_string(desc, spec, i, buf, len);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= 19);
return erl_drv_send_term(desc->inet.dport, caller, spec, i);
}
else {
/* {http, S, {http_error,Line} */
i = LOAD_ATOM(spec, i, am_http);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_ATOM(spec, i, am_http_error);
i = http_load_string(desc, spec, i, buf, len);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 19);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
}
static
int ssl_tls_inetdrv(void* arg, unsigned type, unsigned major, unsigned minor,
const char* buf, int len, const char* prefix, int plen)
{
tcp_descriptor* desc = (tcp_descriptor*) arg;
int i = 0;
ErlDrvTermData spec[30];
ErlDrvTermData caller = ERL_DRV_NIL;
ErlDrvBinary* bin;
int ret;
if ((bin = driver_alloc_binary(plen+len)) == NULL)
return async_error(&desc->inet, ENOMEM);
memcpy(bin->orig_bytes+plen, buf, len);
if (plen) {
memcpy(bin->orig_bytes, prefix, plen);
len += plen;
}
if (desc->inet.active == INET_PASSIVE) {
/* {inet_async,S,Ref,{ok,{ssl_tls,...}}} */
int req;
int aid;
if (deq_async(INETP(desc), &aid, &caller, &req) < 0) {
ret = -1;
goto done;
}
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
}
/* {ssl_tls,S,ContentType,{Major,Minor},Bin} */
i = LOAD_ATOM(spec, i, am_ssl_tls);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_INT(spec, i, type);
i = LOAD_INT(spec, i, major);
i = LOAD_INT(spec, i, minor);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_BINARY(spec, i, bin, 0, len);
i = LOAD_TUPLE(spec, i, 5);
if (desc->inet.active == INET_PASSIVE) {
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= sizeof(spec)/sizeof(*spec));
ret = erl_drv_send_term(desc->inet.dport, caller, spec, i);
}
else {
ASSERT(i <= sizeof(spec)/sizeof(*spec));
ret = erl_drv_output_term(desc->inet.dport, spec, i);
}
done:
driver_free_binary(bin);
return ret;
}
static PacketCallbacks packet_callbacks =
{
http_response_inetdrv,
http_request_inetdrv,
http_eoh_inetdrv,
http_header_inetdrv,
http_error_inetdrv,
ssl_tls_inetdrv
};
/*
** passive mode reply:
** {inet_async, S, Ref, {ok,[H1,...Hsz | Data]}}
** NB: this is for TCP only;
** UDP and SCTP use inet_async_binary_data .
*/
static int inet_async_data(inet_descriptor* desc, const char* buf, int len)
{
unsigned int hsz = desc->hsz;
ErlDrvTermData spec[20];
ErlDrvTermData caller;
int req;
int aid;
int i = 0;
DEBUGF(("inet_async_data(%ld): len = %d\r\n", (long)desc->port, len));
if (deq_async(desc, &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async);
i = LOAD_PORT(spec, i, desc->dport);
i = LOAD_INT(spec, i, aid);
i = LOAD_ATOM(spec, i, am_ok);
if ((desc->mode == INET_MODE_LIST) || (hsz > len)) {
i = LOAD_STRING(spec, i, buf, len); /* => [H1,H2,...Hn] */
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i == 15);
desc->caller = 0;
return erl_drv_send_term(desc->dport, caller, spec, i);
}
else {
/* INET_MODE_BINARY => [H1,H2,...HSz | Binary] */
int sz = len - hsz;
int code;
i = LOAD_BUF2BINARY(spec, i, buf+hsz, sz);
if (hsz > 0)
i = LOAD_STRING_CONS(spec, i, buf, hsz);
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= 20);
desc->caller = 0;
code = erl_drv_send_term(desc->dport, caller, spec, i);
return code;
}
}
#ifndef __WIN32__
static int load_cmsg_int(ErlDrvTermData *spec, int i,
struct cmsghdr *cmsg) {
union u {
byte uint8;
Uint16 uint16;
Uint32 uint32;
Uint64 uint64;
} *p;
p = (union u*) CMSG_DATA(cmsg);
switch (LEN_CMSG_DATA(cmsg) * CHAR_BIT) {
case 8:
return LOAD_INT(spec, i, p->uint8);
case 16:
return LOAD_INT(spec, i, p->uint16);
case 32:
return LOAD_INT(spec, i, p->uint32);
case 64:
return LOAD_INT(spec, i, p->uint64);
}
return LOAD_INT(spec, i, 0);
}
static int parse_ancillary_data_item(ErlDrvTermData *spec, int i,
struct cmsghdr *cmsg, int *n) {
#define LOAD_CMSG_INT(proto, type, am) \
if (cmsg->cmsg_level == (proto) && \
cmsg->cmsg_type == (type)) { \
i = LOAD_ATOM(spec, i, (am)); \
i = load_cmsg_int(spec, i, cmsg); \
i = LOAD_TUPLE(spec, i, 2); \
(*n)++; \
return i; \
}
#if defined(IPPROTO_IP) && defined(IP_TOS)
LOAD_CMSG_INT(IPPROTO_IP, IP_TOS, am_tos);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
LOAD_CMSG_INT(IPPROTO_IPV6, IPV6_TCLASS, am_tclass);
#endif
#if defined(IPPROTO_IP) && defined(IP_TTL)
LOAD_CMSG_INT(IPPROTO_IP, IP_TTL, am_ttl);
#endif
/* BSD uses the RECV* names in CMSG fields */
#if defined(IPPROTO_IP) && defined(IP_RECVTOS)
LOAD_CMSG_INT(IPPROTO_IP, IP_RECVTOS, am_tos);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_RECVTCLASS)
LOAD_CMSG_INT(IPPROTO_IPV6, IPV6_RECVTCLASS, am_tclass);
#endif
#if defined(IPPROTO_IP) && defined(IP_RECVTTL)
LOAD_CMSG_INT(IPPROTO_IP, IP_RECVTTL, am_ttl);
#endif
#undef LOAD_CMSG_INT
return i;
}
#endif /* #ifndef __WIN32__ */
#ifdef HAVE_SCTP
/*
** SCTP-related atoms:
*/
static ErlDrvTermData am_sctp_rtoinfo, /* Option names */
am_sctp_associnfo, am_sctp_initmsg,
am_sctp_autoclose, am_sctp_nodelay,
am_sctp_disable_fragments, am_sctp_i_want_mapped_v4_addr,
am_sctp_maxseg, am_sctp_set_peer_primary_addr,
am_sctp_primary_addr, am_sctp_adaptation_layer,
am_sctp_peer_addr_params, am_sctp_default_send_param,
am_sctp_events, am_sctp_delayed_ack_time,
am_sctp_status, am_sctp_get_peer_addr_info,
/* Record names */
am_sctp_sndrcvinfo, am_sctp_assoc_change,
am_sctp_paddr_change, am_sctp_remote_error,
am_sctp_send_failed, am_sctp_shutdown_event,
am_sctp_adaptation_event, am_sctp_pdapi_event,
am_sctp_assocparams, am_sctp_prim,
am_sctp_setpeerprim, am_sctp_setadaptation,
am_sctp_paddrparams, am_sctp_event_subscribe,
am_sctp_assoc_value, am_sctp_paddrinfo,
/* For #sctp_sndrcvinfo{}: */
am_unordered, am_addr_over,
am_abort, am_eof,
/* For #sctp_assoc_change{}: */
am_comm_up, am_comm_lost,
am_restart, am_shutdown_comp,
am_cant_assoc,
/* For #sctp_paddr_change{}: */
am_addr_available, am_addr_unreachable,
am_addr_removed, am_addr_added,
am_addr_made_prim, am_addr_confirmed,
/* For #sctp_remote_error{}: */
am_short_recv, am_wrong_anc_data,
/* For #sctp_pdap_event{}: */
am_partial_delivery_aborted,
/* For #sctp_paddrparams{}: */
am_hb_enable, am_hb_disable,
am_hb_demand, am_pmtud_enable,
am_pmtud_disable, am_sackdelay_enable,
am_sackdelay_disable,
/* For #sctp_paddrinfo{}: */
am_active, am_inactive,
# if HAVE_DECL_SCTP_UNCONFIRMED
am_unconfirmed,
# endif
/* For #sctp_status{}: */
# if HAVE_DECL_SCTP_EMPTY
am_empty,
# endif
# if HAVE_DECL_SCTP_BOUND
am_bound,
# endif
# if HAVE_DECL_SCTP_LISTEN
am_listen,
# endif
am_cookie_wait, am_cookie_echoed,
am_established, am_shutdown_pending,
am_shutdown_sent, am_shutdown_received,
am_shutdown_ack_sent;
/*
** Parsing of "sctp_sndrcvinfo": ancillary data coming with received msgs.
** This function is mainly used by "sctp_parse_ancillary_data", but also
** by "sctp_parse_async_event" in case of SCTP_SEND_FAILED:
*/
#define SCTP_PARSE_SNDRCVINFO_CNT \
(5*LOAD_ATOM_CNT + 5*LOAD_INT_CNT + 2*LOAD_UINT_CNT + \
LOAD_NIL_CNT + LOAD_LIST_CNT + LOAD_ASSOC_ID_CNT + LOAD_TUPLE_CNT)
static int sctp_parse_sndrcvinfo
(ErlDrvTermData * spec, int i, struct sctp_sndrcvinfo * sri)
{
int n;
i = LOAD_ATOM (spec, i, am_sctp_sndrcvinfo);
i = LOAD_INT (spec, i, sri->sinfo_stream);
i = LOAD_INT (spec, i, sri->sinfo_ssn);
/* Now Flags, as a list: */
n = 0;
if (sri->sinfo_flags & SCTP_UNORDERED)
{ i = LOAD_ATOM (spec, i, am_unordered); n++; }
if (sri->sinfo_flags & SCTP_ADDR_OVER)
{ i = LOAD_ATOM (spec, i, am_addr_over); n++; }
if (sri->sinfo_flags & SCTP_ABORT)
{ i = LOAD_ATOM (spec, i, am_abort); n++; }
if (sri->sinfo_flags & SCTP_EOF)
{ i = LOAD_ATOM (spec, i, am_eof); n++; }
/* SCTP_SENDALL is not yet supported by the Linux kernel */
i = LOAD_NIL (spec, i);
i = LOAD_LIST (spec, i, n+1);
/* Continue with other top-level fields: */
i = LOAD_INT (spec, i, sock_ntohl(sri->sinfo_ppid));
i = LOAD_INT (spec, i, sri->sinfo_context);
i = LOAD_INT (spec, i, sri->sinfo_timetolive);
i = LOAD_UINT (spec, i, sri->sinfo_tsn);
i = LOAD_UINT (spec, i, sri->sinfo_cumtsn);
i = LOAD_ASSOC_ID (spec, i, sri->sinfo_assoc_id);
/* Close up the record: */
i = LOAD_TUPLE (spec, i, 10);
return i;
}
/*
** This function skips non-SCTP ancillary data, returns SCTP-specific anc.data
** (currently "sctp_sndrcvinfo" only) as a list of records:
*/
static int sctp_parse_ancillary_data
(ErlDrvTermData * spec, int i, struct msghdr * mptr)
{
/* First of all, check for ancillary data: */
struct cmsghdr * cmsg, * frst_msg = CMSG_FIRSTHDR(mptr);
int s = 0;
for (cmsg = frst_msg; cmsg != NULL; cmsg = CMSG_NXTHDR(mptr,cmsg))
{
struct sctp_sndrcvinfo * sri;
#ifndef __WIN32
int old_s;
/* Parse ancillary data common to UDP */
old_s = s;
i = parse_ancillary_data_item(spec, i, cmsg, &s);
if (s > old_s) continue;
/* Skip other possible ancillary data, e.g. from IPv6: */
if (cmsg->cmsg_level != IPPROTO_SCTP ||
cmsg->cmsg_type != SCTP_SNDRCV)
continue;
#endif
if (((char*)cmsg + cmsg->cmsg_len) - (char*)frst_msg >
mptr->msg_controllen)
/* MUST check this in Linux -- the returned "cmsg" may actually
go too far! */
break;
/* The ONLY kind of ancillary SCTP data which can occur on receiving
is "sctp_sndrcvinfo" (on sending, "sctp_initmsg" can be specified
by the user). So parse this type:
*/
sri = (struct sctp_sndrcvinfo*) CMSG_DATA(cmsg);
i = sctp_parse_sndrcvinfo (spec, i, sri);
s ++;
}
/* Now make the list of tuples created above. Normally, it will be [] or
a singleton list. The list must first be closed with NIL, otherwise
traversing it in Erlang would be problematic:
*/
i = LOAD_NIL (spec, i);
i = LOAD_LIST(spec, i, s+1);
return i;
}
/*
** Parsing of ERROR and ABORT SCTP chunks. The function returns a list of error
** causes (as atoms). The chunks also contain some extended cause info, but it
** is not very detailed anyway, and of no interest at the user level (it only
** concerns the protocol implementation), so we omit it:
*/
static int sctp_parse_error_chunk
(ErlDrvTermData * spec, int i, char * chunk, int chlen)
{
/* The "chunk" itself contains its length, which must not be greater than
the "chlen" derived from the over-all msg size:
*/
char *causes, *cause;
int coff, /* Cause offset */
ccode, /* Cause code */
clen, /* cause length */
s;
int len = sock_ntohs (*((uint16_t*)(chunk+2)));
ASSERT(len >= 4 && len <= chlen);
causes = chunk + 4;
coff = 0;
len -= 4; /* Total length of the "causes" fields */
cause = causes;
s = 0;
while (coff < len)
{
ccode = sock_ntohs (*((uint16_t*)(cause)));
clen = sock_ntohs (*((uint16_t*)(cause + 2)));
if (clen <= 0)
/* Strange, but must guard against that! */
break;
/* Install the corresp atom for this "ccode": */
i = LOAD_INT (spec, i, ccode);
cause += clen;
coff += clen;
s ++;
}
i = LOAD_NIL (spec, i);
i = LOAD_LIST(spec, i, s+1);
return i;
}
/*
** Parsing of SCTP notification events. NB: they are NOT ancillary data: they
** are sent IN PLACE OF, not in conjunction with, the normal data:
*/
static int sctp_parse_async_event
(ErlDrvTermData * spec, int i, int ok_pos,
ErlDrvTermData error_atom, inet_descriptor* desc,
ErlDrvBinary * bin, int offs, int sz)
{
char* body = bin->orig_bytes + offs;
union sctp_notification * nptr = (union sctp_notification *) body;
switch (nptr->sn_header.sn_type)
{
case SCTP_ASSOC_CHANGE:
{ /* {sctp_assoc_change,
State : Atom(),
Error : Atom(),
OutBoundStreams : Int(),
InBoundStreams : Int(),
AssocID : Int(),
// AbortCauses : [Atom()] // NOT YET IMPLEMENTED
}
*/
struct sctp_assoc_change* sptr = &(nptr->sn_assoc_change);
ASSERT(sptr->sac_length <= sz); /* No buffer overrun */
i = LOAD_ATOM (spec, i, am_sctp_assoc_change);
switch (sptr->sac_state)
{
case SCTP_COMM_UP:
i = LOAD_ATOM (spec, i, am_comm_up);
break;
case SCTP_COMM_LOST:
i = LOAD_ATOM (spec, i, am_comm_lost);
break;
case SCTP_RESTART:
i = LOAD_ATOM (spec, i, am_restart);
break;
case SCTP_SHUTDOWN_COMP:
i = LOAD_ATOM (spec, i, am_shutdown_comp);
break;
case SCTP_CANT_STR_ASSOC:
i = LOAD_ATOM (spec, i, am_cant_assoc);
break;
default:
ASSERT(0);
}
i = LOAD_INT (spec, i, sptr->sac_error);
i = LOAD_INT (spec, i, sptr->sac_outbound_streams);
i = LOAD_INT (spec, i, sptr->sac_inbound_streams);
i = LOAD_INT (spec, i, sptr->sac_assoc_id);
/* The ABORT chunk may or may not be present at the end, depending
on whether there was really an ABORT. In the Linux Kernel SCTP
implementation, this chunk is not delivered anyway, so we leave
it out. Just close up the tuple:
*/
i = LOAD_TUPLE (spec, i, 6);
break;
}
case SCTP_PEER_ADDR_CHANGE:
{ /* {sctp_paddr_change,
AffectedAddr : String(),
State : Atom(),
Error : Atom(),
AssocID : Int()
}
*/
struct sctp_paddr_change* sptr = &(nptr->sn_paddr_change);
ASSERT(sptr->spc_length <= sz); /* No buffer overrun */
i = LOAD_ATOM (spec, i, am_sctp_paddr_change);
i = load_inet_get_address(spec, i, desc, &sptr->spc_aaddr);
switch (sptr->spc_state)
{
case SCTP_ADDR_AVAILABLE:
i = LOAD_ATOM (spec, i, am_addr_available);
break;
case SCTP_ADDR_UNREACHABLE:
i = LOAD_ATOM (spec, i, am_addr_unreachable);
break;
case SCTP_ADDR_REMOVED:
i = LOAD_ATOM (spec, i, am_addr_removed);
break;
case SCTP_ADDR_ADDED:
i = LOAD_ATOM (spec, i, am_addr_added);
break;
case SCTP_ADDR_MADE_PRIM:
i = LOAD_ATOM (spec, i, am_addr_made_prim);
break;
#if HAVE_DECL_SCTP_ADDR_CONFIRMED
case SCTP_ADDR_CONFIRMED:
i = LOAD_ATOM (spec, i, am_addr_confirmed);
break;
#endif
default:
ASSERT(0);
}
i = LOAD_INT (spec, i, sptr->spc_error);
i = LOAD_INT (spec, i, sptr->spc_assoc_id);
i = LOAD_TUPLE (spec, i, 5);
break;
}
case SCTP_REMOTE_ERROR:
{ /* This is an error condition, so we return an error term
{sctp_remote_error,
Error : Int(),
AssocID : Int(),
RemoteCauses : [Atom()] // Remote Error flags
}
*/
char *chunk;
int chlen;
struct sctp_remote_error * sptr = &(nptr->sn_remote_error);
ASSERT(sptr->sre_length <= sz); /* No buffer overrun */
/* Over-write the prev part of the response with an error: */
(void)LOAD_ATOM(spec, ok_pos, error_atom);
/* Continue from the curr pos: */
i = LOAD_ATOM (spec, i, am_sctp_remote_error);
i = LOAD_INT (spec, i, sock_ntohs(sptr->sre_error));
i = LOAD_INT (spec, i, sptr->sre_assoc_id);
# ifdef HAVE_STRUCT_SCTP_REMOTE_ERROR_SRE_DATA
chunk = (char*) (&(sptr->sre_data));
# else
chunk = ((char*) &(sptr->sre_assoc_id))
+ sizeof(sptr->sre_assoc_id);
# endif
chlen = sptr->sre_length - (chunk - (char *)sptr);
i = sctp_parse_error_chunk(spec, i, chunk, chlen);
i = LOAD_TUPLE (spec, i, 4);
/* The {error, {...}} will be closed by the caller */
break;
}
case SCTP_SEND_FAILED:
{ /* {sctp_send_failed,
DataSent : Atom() // true or false
Error : Atom(),
OrigInfo : Tuple(),
AssocID : Int(),
OrigData : Binary()
}
This is also an ERROR condition -- overwrite the 'ok':
*/
char *chunk;
int chlen, choff;
struct sctp_send_failed * sptr = &(nptr->sn_send_failed);
ASSERT(sptr->ssf_length <= sz); /* No buffer overrun */
/* Over-write 'ok' with 'error', continue from curr "i": */
(void)LOAD_ATOM(spec, ok_pos, error_atom);
i = LOAD_ATOM (spec, i, am_sctp_send_failed);
switch (sptr->ssf_flags) {
case SCTP_DATA_SENT:
i = LOAD_ATOM (spec, i, am_true);
break;
case SCTP_DATA_UNSENT:
i = LOAD_ATOM (spec, i, am_false);
break;
default:
ASSERT(0);
}
i = LOAD_INT (spec, i, sptr->ssf_error);
/* Now parse the orig SCTP_SNDRCV info */
i = sctp_parse_sndrcvinfo (spec, i, &sptr->ssf_info);
i = LOAD_ASSOC_ID (spec, i, sptr->ssf_assoc_id);
/* Load the orig data chunk, as an unparsed binary. Note that
in LOAD_BINARY below, we must specify the offset wrt bin->
orig_bytes. In Solaris 10, we don't have ssf_data:
*/
# ifdef HAVE_STRUCT_SCTP_SEND_FAILED_SSF_DATA
chunk = (char*) (&(sptr->ssf_data));
# else
chunk = ((char*) &(sptr->ssf_assoc_id))
+ sizeof(sptr->ssf_assoc_id);
# endif
chlen = sptr->ssf_length - (chunk - (char*) sptr);
choff = chunk - bin->orig_bytes;
i = LOAD_BINARY(spec, i, bin, choff, chlen);
i = LOAD_TUPLE (spec, i, 6);
/* The {error, {...}} tuple is not yet closed */
break;
}
case SCTP_SHUTDOWN_EVENT:
{ /* {sctp_shutdown_event,
AssocID : Int()
}
*/
struct sctp_shutdown_event * sptr = &(nptr->sn_shutdown_event);
ASSERT (sptr->sse_length == sizeof(struct sctp_shutdown_event) &&
sptr->sse_length <= sz); /* No buffer overrun */
i = LOAD_ATOM (spec, i, am_sctp_shutdown_event);
i = LOAD_INT (spec, i, sptr->sse_assoc_id);
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_ADAPTATION_INDICATION:
{ /* {sctp_adaptation_event,
Indication : Atom(),
AssocID : Int()
}
*/
struct sctp_adaptation_event * sptr =
&(nptr->sn_adaptation_event);
ASSERT (sptr->sai_length == sizeof(struct sctp_adaptation_event)
&& sptr->sai_length <= sz); /* No buffer overrun */
i = LOAD_ATOM (spec, i, am_sctp_adaptation_event);
i = LOAD_INT (spec, i, sock_ntohl(sptr->sai_adaptation_ind));
i = LOAD_INT (spec, i, sptr->sai_assoc_id);
i = LOAD_TUPLE (spec, i, 3);
break;
}
case SCTP_PARTIAL_DELIVERY_EVENT:
{ /* It is not clear whether this event is sent to the sender
(when the receiver gets only a part of a message), or to
the receiver itself. In any case, we do not support partial
delivery of msgs in this implementation, so this is an error
condition:
{sctp_pdapi_event, sctp_partial_delivery_aborted, AssocID}:
*/
struct sctp_pdapi_event * sptr;
(void) LOAD_ATOM (spec, ok_pos, error_atom);
sptr = &(nptr->sn_pdapi_event);
ASSERT (sptr->pdapi_length == sizeof(struct sctp_pdapi_event) &&
sptr->pdapi_length <= sz); /* No buffer overrun */
i = LOAD_ATOM (spec, i, am_sctp_pdapi_event);
/* Currently, there is only one indication possible: */
ASSERT (sptr->pdapi_indication == SCTP_PARTIAL_DELIVERY_ABORTED);
i = LOAD_ATOM (spec, i, am_partial_delivery_aborted);
i = LOAD_INT (spec, i, sptr->pdapi_assoc_id);
i = LOAD_TUPLE (spec, i, 3);
/* The {error, {...}} tuple is not yet closed */
break;
}
/* XXX: No more supported SCTP Event types. The standard also provides
SCTP_AUTHENTICATION_EVENT, but it is not implemented in the Linux
kernel, hence not supported here either. It is not possible to
request delivery of such events in this implementation, so they
cannot occur:
*/
default: ASSERT(0);
}
return i;
}
#endif /* HAVE_SCTP */
#ifndef __WIN32__
static int udp_parse_ancillary_data(ErlDrvTermData *spec, int i,
struct msghdr *mptr) {
struct cmsghdr *cmsg;
int n;
n = 0;
for (cmsg = CMSG_FIRSTHDR(mptr);
cmsg != NULL;
cmsg = CMSG_NXTHDR(mptr, cmsg)) {
i = parse_ancillary_data_item(spec, i, cmsg, &n);
}
i = LOAD_NIL(spec, i);
return LOAD_LIST(spec, i, n+1);
}
#endif /* ifndef __WIN32__ */
/*
** passive mode reply:
** for UDP:
** {inet_async, S, Ref, {ok, Data=[H1,...,Hsz | BinData]}}
** or (in the list mode)
** {inet_async, S, Ref, {ok, Data=[H1,...,Hsz]}}
**
** for SCTP:
** {inet_async, S, Ref, {ok, {[H1,...,HSz], [AncilData], Data_OR_Event}}}
** where each AncilDatum:Tuple();
** Data:List() or Binary(), but if List(), then without the Addr part,
** which is moved in front;
** Event:Tuple();
** or
** {inet_async, S, Ref, {error, {[H1,...,HSz], [AncilData], ErrorTerm}}}
**
** Cf: the output of send_async_error() is
** {inet_async, S, Ref, {error, Cause:Atom()}}
*/
static int
inet_async_binary_data
(inet_descriptor* desc, unsigned int phsz,
ErlDrvBinary * bin, int offs, int len, void *mp)
{
unsigned int hsz = desc->hsz + phsz;
ErlDrvTermData spec [PACKET_ERL_DRV_TERM_DATA_LEN];
ErlDrvTermData caller = desc->caller;
int aid;
int req;
int i = 0;
#ifdef HAVE_SCTP
int ok_pos;
#endif
DEBUGF(("inet_async_binary_data(%ld): offs=%d, len=%d\r\n",
(long)desc->port, offs, len));
if (deq_async(desc, &aid, &caller, &req) < 0)
return -1;
i = LOAD_ATOM(spec, i, am_inet_async); /* 'inet_async' */
i = LOAD_PORT(spec, i, desc->dport); /* S */
i = LOAD_INT (spec, i, aid); /* Ref */
#ifdef HAVE_SCTP
/* Need to memoise the position of the 'ok' atom written, as it may
later be overridden by an 'error': */
ok_pos = i;
#endif
i = LOAD_ATOM(spec, i, am_ok);
#ifdef HAVE_SCTP
if (IS_SCTP(desc))
{ /* For SCTP we always have desc->hsz==0 (i.e., no application-level
headers are used), so hsz==phsz (see above): */
int sz;
struct msghdr *mptr;
mptr = mp;
ASSERT (hsz == phsz && hsz != 0);
sz = len - hsz; /* Size of the msg data proper, w/o the addr */
/* We always put the Addr as a list in front */
i = LOAD_STRING(spec, i, bin->orig_bytes+offs, hsz);
/* Put in the list (possibly empty) of Ancillary Data: */
i = sctp_parse_ancillary_data (spec, i, mptr);
/* Then: Data or Event (Notification)? */
if (mptr->msg_flags & MSG_NOTIFICATION)
/* This is an Event, parse it. It may indicate a normal or an error
condition; in the latter case, the 'ok' above is overridden by
an 'error', and the Event we receive contains the error term: */
i = sctp_parse_async_event
(spec, i, ok_pos, am_error, desc, bin, offs+hsz, sz);
else
/* This is SCTP data, not a notification event. The data can be
returned as a List or as a Binary, similar to the generic case:
*/
if (desc->mode == INET_MODE_LIST)
/* INET_MODE_LIST => [H1,H2,...Hn], addr and data together,
butthe Addr has already been parsed, so start at offs+hsz:
*/
i = LOAD_STRING(spec, i, bin->orig_bytes+offs+hsz, sz);
else
/* INET_MODE_BINARY => Binary */
i = LOAD_BINARY(spec, i, bin, offs+hsz, sz);
/* Close up the {[H1,...,HSz], [AncilData], Event_OR_Data} tuple. This
is valid even in the case when Event is a error notification: */
i = LOAD_TUPLE (spec, i, 3);
}
else
#endif /* HAVE_SCTP */
{
/* Generic case. Both Addr and Data
* (or a single list of them together) are returned: */
if ((desc->mode == INET_MODE_LIST) || (hsz > len)) {
/* INET_MODE_LIST => [H1,H2,...Hn] */
i = LOAD_STRING(spec, i, bin->orig_bytes+offs, len);
}
else {
/* INET_MODE_BINARY => [H1,H2,...HSz | Binary] or [Binary]: */
int sz = len - hsz;
i = LOAD_BINARY(spec, i, bin, offs+hsz, sz);
if (hsz > 0)
i = LOAD_STRING_CONS(spec, i, bin->orig_bytes+offs, hsz);
}
#ifndef __WIN32__
if (mp) {
/* We got ancillary data from an UDP recvmsg.
* Insert an additional tuple level {[F|AddrData],AncData} */
i = udp_parse_ancillary_data(spec, i, (struct msghdr*)mp);
i = LOAD_TUPLE(spec, i, 2);
}
#endif
}
/* Close up the {ok, ...} or {error, ...} tuple: */
i = LOAD_TUPLE(spec, i, 2);
/* Close up the outer {inet_async, S, Ref, {ok|error, ...}} tuple: */
i = LOAD_TUPLE(spec, i, 4);
ASSERT(i <= PACKET_ERL_DRV_TERM_DATA_LEN);
desc->caller = 0;
return erl_drv_send_term(desc->dport, caller, spec, i);
}
/*
** active mode message:
** {tcp, S, [H1,...Hsz | Data]}
*/
static int tcp_message(inet_descriptor* desc, const char* buf, int len)
{
unsigned int hsz = desc->hsz;
ErlDrvTermData spec[20];
int i = 0;
DEBUGF(("tcp_message(%ld): len = %d\r\n", (long)desc->port, len));
/* XXX fprintf(stderr,"tcp_message send.\r\n"); */
i = LOAD_ATOM(spec, i, am_tcp);
i = LOAD_PORT(spec, i, desc->dport);
if ((desc->mode == INET_MODE_LIST) || (hsz > len)) {
i = LOAD_STRING(spec, i, buf, len); /* => [H1,H2,...Hn] */
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 20);
return erl_drv_output_term(desc->dport, spec, i);
}
else {
/* INET_MODE_BINARY => [H1,H2,...HSz | Binary] */
int sz = len - hsz;
int code;
i = LOAD_BUF2BINARY(spec, i, buf+hsz, sz);
if (hsz > 0)
i = LOAD_STRING_CONS(spec, i, buf, hsz);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 20);
code = erl_drv_output_term(desc->dport, spec, i);
return code;
}
}
/*
** active mode message:
** {tcp, S, [H1,...Hsz | Data]}
*/
static int
tcp_binary_message(inet_descriptor* desc, ErlDrvBinary* bin, int offs, int len)
{
unsigned int hsz = desc->hsz;
ErlDrvTermData spec[20];
int i = 0;
DEBUGF(("tcp_binary_message(%ld): len = %d\r\n", (long)desc->port, len));
i = LOAD_ATOM(spec, i, am_tcp);
i = LOAD_PORT(spec, i, desc->dport);
if ((desc->mode == INET_MODE_LIST) || (hsz > len)) {
/* INET_MODE_LIST => [H1,H2,...Hn] */
i = LOAD_STRING(spec, i, bin->orig_bytes+offs, len);
}
else {
/* INET_MODE_BINARY => [H1,H2,...HSz | Binary] */
int sz = len - hsz;
i = LOAD_BINARY(spec, i, bin, offs+hsz, sz);
if (hsz > 0)
i = LOAD_STRING_CONS(spec, i, bin->orig_bytes+offs, hsz);
}
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 20);
return erl_drv_output_term(desc->dport, spec, i);
}
/*
** send: active mode {tcp_closed, S}
*/
static int tcp_closed_message(tcp_descriptor* desc)
{
ErlDrvTermData spec[6];
int i = 0;
DEBUGF(("tcp_closed_message(%ld):\r\n", (long)desc->inet.port));
if (!(desc->tcp_add_flags & TCP_ADDF_CLOSE_SENT)) {
desc->tcp_add_flags |= TCP_ADDF_CLOSE_SENT;
i = LOAD_ATOM(spec, i, am_tcp_closed);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_TUPLE(spec, i, 2);
ASSERT(i <= 6);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
return 0;
}
/*
** send active message {tcp_error, S, Error}
*/
static int tcp_error_message(tcp_descriptor* desc, int err)
{
ErlDrvTermData spec[8];
ErlDrvTermData am_err = error_atom(err);
int i = 0;
DEBUGF(("tcp_error_message(%ld): %d\r\n", (long)desc->inet.port, err));
i = LOAD_ATOM(spec, i, am_tcp_error);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_ATOM(spec, i, am_err);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i <= 8);
return erl_drv_output_term(desc->inet.dport, spec, i);
}
#ifdef HAVE_UDP
/*
** active mode message:
** {udp, S, IP, Port, [H1,...Hsz | Data]} or
** {sctp, S, IP, Port, {[AncilData], Event_or_Data}}
** where
** [H1,...,HSz] are msg headers (without IP/Port, UDP only),
** [AddrLen, H2,...,HSz] are msg headers for UDP AF_UNIX only
** Data : List() | Binary()
*/
static int packet_binary_message(inet_descriptor* desc,
ErlDrvBinary* bin, int offs, int len,
void *mp)
{
unsigned int hsz = desc->hsz;
ErlDrvTermData spec [PACKET_ERL_DRV_TERM_DATA_LEN];
int i = 0;
int alen;
char* data = bin->orig_bytes+offs;
DEBUGF(("packet_binary_message(%ld): len = %d\r\n",
(long)desc->port, len));
# ifdef HAVE_SCTP
i = LOAD_ATOM(spec, i, IS_SCTP(desc) ? am_sctp : am_udp); /* UDP|SCTP */
# else
i = LOAD_ATOM(spec, i, am_udp ); /* UDP only */
# endif
i = LOAD_PORT(spec, i, desc->dport); /* S */
alen = addrlen(data);
i = load_address(spec, i, data); /* IP,Port | Family,Addr */
offs += alen;
len -= alen;
# ifdef HAVE_SCTP
if (!IS_SCTP(desc))
# endif
{
#ifndef __WIN32__
if (mp) i = udp_parse_ancillary_data(spec, i, (struct msghdr*)mp);
#endif
/* We got ancillary data from an UDP recvmsg.
* Insert an additional tuple level {AncData,[F|AddrData]}
*/
if ((desc->mode == INET_MODE_LIST) || (hsz > len))
/* INET_MODE_LIST, or only headers => [H1,H2,...Hn] */
i = LOAD_STRING(spec, i, bin->orig_bytes+offs, len);
else {
/* INET_MODE_BINARY => [H1,H2,...HSz | Binary] */
int sz = len - hsz;
i = LOAD_BINARY(spec, i, bin, offs+hsz, sz);
if (hsz > 0)
i = LOAD_STRING_CONS(spec, i, bin->orig_bytes+offs, hsz);
}
/* Close up the outer 5-or-6-tuple */
#ifndef __WIN32__
if (mp) i = LOAD_TUPLE(spec, i, 6);
else
#endif
i = LOAD_TUPLE(spec, i, 5);
}
# ifdef HAVE_SCTP
else
{
struct msghdr *mptr;
mptr = mp;
/* For SCTP we always have desc->hsz==0 (i.e., no application-level
headers are used): */
ASSERT(hsz == 0);
/* Put in the list (possibly empty) of Ancillary Data: */
i = sctp_parse_ancillary_data (spec, i, mptr);
/* Then: Data or Event (Notification)? */
if (mptr->msg_flags & MSG_NOTIFICATION)
/* This is an Event, parse it. It may indicate a normal or an error
condition; in the latter case, the initial 'sctp' atom is over-
ridden by 'sctp_error', and the Event we receive contains the
error term: */
i = sctp_parse_async_event
(spec, i, 0, am_sctp_error, desc, bin, offs, len);
else
/* This is SCTP data, not a notification event. The data can be
returned as a List or as a Binary, similar to the generic case:
*/
if (desc->mode == INET_MODE_LIST)
/* INET_MODE_LIST => [H1,H2,...Hn], addr and data together,
but the Addr has already been parsed, so start at offs:
*/
i = LOAD_STRING(spec, i, bin->orig_bytes+offs, len);
else
/* INET_MODE_BINARY => Binary */
i = LOAD_BINARY(spec, i, bin, offs, len);
/* Close up the {[AncilData], Event_OR_Data} tuple: */
i = LOAD_TUPLE (spec, i, 2);
/* Close up the outer 5-tuple: */
i = LOAD_TUPLE(spec, i, 5);
}
# endif /* HAVE_SCTP */
ASSERT(i <= PACKET_ERL_DRV_TERM_DATA_LEN);
return erl_drv_output_term(desc->dport, spec, i);
}
#endif
/*
** active mode message: send active-to-passive transition message
** {tcp_passive, S} or
** {udp_passive, S} or
** {sctp_passive, S}
*/
static int packet_passive_message(inet_descriptor* desc)
{
ErlDrvTermData spec[6];
int i = 0;
DEBUGF(("packet_passive_message(%ld):\r\n", (long)desc->port));
#if !defined(HAVE_UDP) && !defined(HAVE_SCTP)
i = LOAD_ATOM(spec, i, am_tcp_passive);
#else
if (desc->sprotocol == IPPROTO_TCP)
i = LOAD_ATOM(spec, i, am_tcp_passive);
else {
#ifdef HAVE_SCTP
i = LOAD_ATOM(spec, i, IS_SCTP(desc) ? am_sctp_passive : am_udp_passive);
#else
i = LOAD_ATOM(spec, i, am_udp_passive);
#endif
}
#endif
i = LOAD_PORT(spec, i, desc->dport);
i = LOAD_TUPLE(spec, i, 2);
ASSERT(i <= 6);
return erl_drv_output_term(desc->dport, spec, i);
}
#ifdef HAVE_UDP
/*
** send active message {udp_error|sctp_error, S, Error}
*/
static int packet_error_message(udp_descriptor* udesc, int err)
{
inet_descriptor* desc = INETP(udesc);
ErlDrvTermData spec[2*LOAD_ATOM_CNT + LOAD_PORT_CNT + LOAD_TUPLE_CNT];
ErlDrvTermData am_err = error_atom(err);
int i = 0;
DEBUGF(("packet_error_message(%ld): %d\r\n",
(long)desc->port, err));
# ifdef HAVE_SCTP
if (IS_SCTP(desc) )
i = LOAD_ATOM(spec, i, am_sctp_error);
else
# endif
i = LOAD_ATOM(spec, i, am_udp_error);
i = LOAD_PORT(spec, i, desc->dport);
i = LOAD_ATOM(spec, i, am_err);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i == sizeof(spec)/sizeof(*spec));
return erl_drv_output_term(desc->dport, spec, i);
}
#endif
/*
** active=TRUE:
** (NOTE! distribution MUST use active=TRUE, deliver=PORT)
** deliver=PORT {S, {data, [H1,..Hsz | Data]}}
** deliver=TERM {tcp, S, [H1..Hsz | Data]}
**
** active=FALSE:
** {async, S, Ref, {ok,[H1,...Hsz | Data]}}
*/
static int tcp_reply_data(tcp_descriptor* desc, char* buf, int len)
{
int code;
const char* body = buf;
int bodylen = len;
packet_get_body(desc->inet.htype, &body, &bodylen);
if (desc->inet.deliver == INET_DELIVER_PORT) {
code = inet_port_data(INETP(desc), body, bodylen);
}
else if ((code=packet_parse(desc->inet.htype, buf, len,
&desc->http_state, &packet_callbacks,
desc)) == 0) {
/* No body parsing, return raw binary */
if (desc->inet.active == INET_PASSIVE)
return inet_async_data(INETP(desc), body, bodylen);
else
code = tcp_message(INETP(desc), body, bodylen);
}
if (code < 0)
return code;
INET_CHECK_ACTIVE_TO_PASSIVE(INETP(desc));
return code;
}
static int
tcp_reply_binary_data(tcp_descriptor* desc, ErlDrvBinary* bin, int offs, int len)
{
int code;
const char* buf = bin->orig_bytes + offs;
const char* body = buf;
int bodylen = len;
packet_get_body(desc->inet.htype, &body, &bodylen);
offs = body - bin->orig_bytes; /* body offset now */
if (desc->inet.deliver == INET_DELIVER_PORT)
code = inet_port_binary_data(INETP(desc), bin, offs, bodylen);
else if ((code=packet_parse(desc->inet.htype, buf, len, &desc->http_state,
&packet_callbacks,desc)) == 0) {
/* No body parsing, return raw data */
if (desc->inet.active == INET_PASSIVE)
return inet_async_binary_data(INETP(desc), 0, bin, offs, bodylen, NULL);
else
code = tcp_binary_message(INETP(desc), bin, offs, bodylen);
}
if (code < 0)
return code;
INET_CHECK_ACTIVE_TO_PASSIVE(INETP(desc));
return code;
}
#ifdef HAVE_UDP
static int
packet_reply_binary_data(inet_descriptor* desc, unsigned int hsz,
ErlDrvBinary * bin, int offs, int len,
void *mp)
{
int code;
if (desc->active == INET_PASSIVE)
/* "inet" is actually for both UDP and SCTP, as well as TCP! */
return inet_async_binary_data(desc, hsz, bin, offs, len, mp);
else
{ /* INET_ACTIVE or INET_ONCE: */
if (desc->deliver == INET_DELIVER_PORT)
code = inet_port_binary_data(desc, bin, offs, len);
else
code = packet_binary_message(desc, bin, offs, len, mp);
if (code < 0)
return code;
INET_CHECK_ACTIVE_TO_PASSIVE(desc);
return code;
}
}
#endif
/* ----------------------------------------------------------------------------
INET
---------------------------------------------------------------------------- */
static int
sock_init(void) /* May be called multiple times. */
{
#ifdef __WIN32__
WORD wVersionRequested;
WSADATA wsaData;
static int res = -1; /* res < 0 == initialization never attempted */
if (res >= 0)
return res;
wVersionRequested = MAKEWORD(2,0);
if (WSAStartup(wVersionRequested, &wsaData) != 0)
goto error;
if ((LOBYTE(wsaData.wVersion) != 2) || (HIBYTE(wsaData.wVersion) != 0))
goto error;
find_dynamic_functions();
return res = 1;
error:
WSACleanup();
return res = 0;
#else
return 1;
#endif
}
#ifdef HAVE_SCTP
static void inet_init_sctp(void) {
INIT_ATOM(sctp);
INIT_ATOM(sctp_passive);
INIT_ATOM(sctp_error);
INIT_ATOM(true);
INIT_ATOM(false);
INIT_ATOM(buffer);
INIT_ATOM(mode);
INIT_ATOM(list);
INIT_ATOM(binary);
INIT_ATOM(active);
INIT_ATOM(once);
INIT_ATOM(multi);
INIT_ATOM(buffer);
INIT_ATOM(linger);
INIT_ATOM(recbuf);
INIT_ATOM(sndbuf);
INIT_ATOM(reuseaddr);
INIT_ATOM(dontroute);
INIT_ATOM(priority);
INIT_ATOM(recvtos);
INIT_ATOM(recvtclass);
INIT_ATOM(recvttl);
INIT_ATOM(ipv6_v6only);
INIT_ATOM(netns);
INIT_ATOM(bind_to_device);
/* Option names */
INIT_ATOM(sctp_rtoinfo);
INIT_ATOM(sctp_associnfo);
INIT_ATOM(sctp_initmsg);
INIT_ATOM(sctp_autoclose);
INIT_ATOM(sctp_nodelay);
INIT_ATOM(sctp_disable_fragments);
INIT_ATOM(sctp_i_want_mapped_v4_addr);
INIT_ATOM(sctp_maxseg);
INIT_ATOM(sctp_set_peer_primary_addr);
INIT_ATOM(sctp_primary_addr);
INIT_ATOM(sctp_adaptation_layer);
INIT_ATOM(sctp_peer_addr_params);
INIT_ATOM(sctp_default_send_param);
INIT_ATOM(sctp_events);
INIT_ATOM(sctp_delayed_ack_time);
INIT_ATOM(sctp_status);
INIT_ATOM(sctp_get_peer_addr_info);
/* Record names */
INIT_ATOM(sctp_sndrcvinfo);
INIT_ATOM(sctp_assoc_change);
INIT_ATOM(sctp_paddr_change);
INIT_ATOM(sctp_remote_error);
INIT_ATOM(sctp_send_failed);
INIT_ATOM(sctp_shutdown_event);
INIT_ATOM(sctp_adaptation_event);
INIT_ATOM(sctp_pdapi_event);
INIT_ATOM(sctp_assocparams);
INIT_ATOM(sctp_prim);
INIT_ATOM(sctp_setpeerprim);
INIT_ATOM(sctp_setadaptation);
INIT_ATOM(sctp_paddrparams);
INIT_ATOM(sctp_event_subscribe);
INIT_ATOM(sctp_assoc_value);
INIT_ATOM(sctp_paddrinfo);
/* For #sctp_sndrcvinfo{}: */
INIT_ATOM(unordered);
INIT_ATOM(addr_over);
INIT_ATOM(abort);
INIT_ATOM(eof);
/* For #sctp_assoc_change{}: */
INIT_ATOM(comm_up);
INIT_ATOM(comm_lost);
INIT_ATOM(restart);
INIT_ATOM(shutdown_comp);
INIT_ATOM(cant_assoc);
/* For #sctp_paddr_change{}: */
INIT_ATOM(addr_available);
INIT_ATOM(addr_unreachable);
INIT_ATOM(addr_removed);
INIT_ATOM(addr_added);
INIT_ATOM(addr_made_prim);
INIT_ATOM(addr_confirmed);
INIT_ATOM(short_recv);
INIT_ATOM(wrong_anc_data);
/* For #sctp_pdap_event{}: */
INIT_ATOM(partial_delivery_aborted);
/* For #sctp_paddrparams{}: */
INIT_ATOM(hb_enable);
INIT_ATOM(hb_disable);
INIT_ATOM(hb_demand);
INIT_ATOM(pmtud_enable);
INIT_ATOM(pmtud_disable);
INIT_ATOM(sackdelay_enable);
INIT_ATOM(sackdelay_disable);
/* For #sctp_paddrinfo{}: */
INIT_ATOM(active);
INIT_ATOM(inactive);
# if HAVE_DECL_SCTP_UNCONFIRMED
INIT_ATOM(unconfirmed);
# endif
/* For #sctp_status{}: */
# if HAVE_DECL_SCTP_EMPTY
INIT_ATOM(empty);
# endif
# if HAVE_DECL_SCTP_BOUND
INIT_ATOM(bound);
# endif
# if HAVE_DECL_SCTP_LISTEN
INIT_ATOM(listen);
# endif
INIT_ATOM(cookie_wait);
INIT_ATOM(cookie_echoed);
INIT_ATOM(established);
INIT_ATOM(shutdown_pending);
INIT_ATOM(shutdown_sent);
INIT_ATOM(shutdown_received);
INIT_ATOM(shutdown_ack_sent);
}
#endif /* HAVE_SCTP */
static int inet_init()
{
if (!sock_init())
goto error;
if (0 != erl_drv_tsd_key_create("inet_buffer_stack_key", &buffer_stack_key))
goto error;
ERTS_CT_ASSERT(sizeof(struct in_addr) == 4);
# if defined(HAVE_IN6) && defined(AF_INET6)
ERTS_CT_ASSERT(sizeof(struct in6_addr) == 16);
# endif
INIT_ATOM(ok);
INIT_ATOM(undefined);
INIT_ATOM(unspec);
INIT_ATOM(tcp);
#ifdef HAVE_UDP
INIT_ATOM(udp);
#endif
INIT_ATOM(error);
INIT_ATOM(einval);
INIT_ATOM(inet_async);
INIT_ATOM(inet_reply);
INIT_ATOM(timeout);
INIT_ATOM(closed);
INIT_ATOM(tcp_passive);
INIT_ATOM(tcp_closed);
INIT_ATOM(tcp_error);
#ifdef HAVE_UDP
INIT_ATOM(udp_passive);
INIT_ATOM(udp_error);
#endif
#ifdef HAVE_SYS_UN_H
INIT_ATOM(local);
#endif
INIT_ATOM(empty_out_q);
INIT_ATOM(ssl_tls);
#ifndef __WIN32__
INIT_ATOM(tos);
INIT_ATOM(tclass);
INIT_ATOM(ttl);
#endif
INIT_ATOM(http_eoh);
INIT_ATOM(http_header);
INIT_ATOM(http_request);
INIT_ATOM(http_response);
INIT_ATOM(http_error);
INIT_ATOM(abs_path);
INIT_ATOM(absoluteURI);
am_star = driver_mk_atom("*");
INIT_ATOM(http);
INIT_ATOM(https);
INIT_ATOM(scheme);
#ifdef HAVE_SENDFILE
INIT_ATOM(sendfile);
#endif
/* add TCP, UDP and SCTP drivers */
add_driver_entry(&tcp_inet_driver_entry);
#ifdef HAVE_UDP
add_driver_entry(&udp_inet_driver_entry);
#endif
#ifdef HAVE_SCTP
/* Check the size of SCTP AssocID -- currently both this driver and the
Erlang part require 32 bit: */
ERTS_CT_ASSERT(sizeof(sctp_assoc_t)==ASSOC_ID_LEN);
# if defined(HAVE_SCTP_BINDX)
p_sctp_bindx = sctp_bindx;
# if defined(HAVE_SCTP_PEELOFF)
p_sctp_peeloff = sctp_peeloff;
# else
p_sctp_peeloff = NULL;
# endif
# if defined(HAVE_SCTP_GETLADDRS) && defined(HAVE_SCTP_FREELADDRS)
p_sctp_getladdrs = sctp_getladdrs;
p_sctp_freeladdrs = sctp_freeladdrs;
# else
p_sctp_getladdrs = NULL;
p_sctp_freeladdrs = NULL;
# endif
# if defined(HAVE_SCTP_GETPADDRS) && defined(HAVE_SCTP_FREEPADDRS)
p_sctp_getpaddrs = sctp_getpaddrs;
p_sctp_freepaddrs = sctp_freepaddrs;
# else
p_sctp_getpaddrs = NULL;
p_sctp_freepaddrs = NULL;
# endif
inet_init_sctp();
add_driver_entry(&sctp_inet_driver_entry);
# else
# ifndef LIBSCTP
# error LIBSCTP not defined
# endif
{
static void *h_libsctp = NULL;
if (erts_sys_ddll_open_noext(STRINGIFY(LIBSCTP), &h_libsctp, NULL)
== 0) {
void *ptr;
if (erts_sys_ddll_sym(h_libsctp, "sctp_bindx", &ptr) == 0) {
p_sctp_bindx = ptr;
if (erts_sys_ddll_sym(h_libsctp, "sctp_peeloff", &ptr) == 0) {
p_sctp_peeloff = ptr;
}
else p_sctp_peeloff = NULL;
if (erts_sys_ddll_sym(h_libsctp, "sctp_getladdrs", &ptr) == 0) {
p_sctp_getladdrs = ptr;
}
else p_sctp_getladdrs = NULL;
if (erts_sys_ddll_sym(h_libsctp, "sctp_freeladdrs", &ptr) == 0) {
p_sctp_freeladdrs = ptr;
}
else {
p_sctp_freeladdrs = NULL;
p_sctp_getladdrs = NULL;
}
if (erts_sys_ddll_sym(h_libsctp, "sctp_getpaddrs", &ptr) == 0) {
p_sctp_getpaddrs = ptr;
}
else p_sctp_getpaddrs = NULL;
if (erts_sys_ddll_sym(h_libsctp, "sctp_freepaddrs", &ptr) == 0) {
p_sctp_freepaddrs = ptr;
}
else {
p_sctp_freepaddrs = NULL;
p_sctp_getpaddrs = NULL;
}
inet_init_sctp();
add_driver_entry(&sctp_inet_driver_entry);
}
else p_sctp_bindx = NULL;
}
}
# endif
#endif
/* remove the dummy inet driver */
remove_driver_entry(&inet_driver_entry);
return 0;
error:
remove_driver_entry(&inet_driver_entry);
return -1;
}
/*
** Set an inaddr structure:
** *src = [P1,P0,X1,X2,.....]
** dst points to a structure large enugh to keep any kind
** of inaddr.
** *len is set to length of src on call
** and is set to actual length of dst on return
** return NULL if ok or ptr to errno string for error
*/
static char* inet_set_address(int family, inet_address* dst,
char* *src, ErlDrvSizeT* len)
{
short port;
switch (family) {
case AF_INET: {
if (*len < 2+4) return str_einval;
sys_memzero((char*)dst, sizeof(struct sockaddr_in));
port = get_int16(*src);
#ifndef NO_SA_LEN
dst->sai.sin_len = sizeof(struct sockaddr_in);
#endif
dst->sai.sin_family = family;
dst->sai.sin_port = sock_htons(port);
sys_memcpy(&dst->sai.sin_addr, (*src)+2, 4);
*len = sizeof(struct sockaddr_in);
*src += 2 + 4;
return NULL;
}
#if defined(HAVE_IN6) && defined(AF_INET6)
case AF_INET6: {
if (*len < 2+16) return str_einval;
sys_memzero((char*)dst, sizeof(struct sockaddr_in6));
port = get_int16(*src);
#ifndef NO_SA_LEN
dst->sai6.sin6_len = sizeof(struct sockaddr_in6);
#endif
dst->sai6.sin6_family = family;
dst->sai6.sin6_port = sock_htons(port);
dst->sai6.sin6_flowinfo = 0; /* XXX this may be set as well ?? */
sys_memcpy(&dst->sai6.sin6_addr, (*src)+2, 16);
*len = sizeof(struct sockaddr_in6);
*src += 2 + 16;
return NULL;
}
#endif
#ifdef HAVE_SYS_UN_H
case AF_UNIX: {
int n;
if (*len == 0) return str_einval;
n = *((unsigned char*)(*src)); /* Length field */
if (*len < 1+n) return str_einval;
if (n +
#ifdef __linux__
/* Make sure the address gets zero terminated
* except when the first byte is \0 because then it is
* sort of zero terminated although the zero termination
* comes before the address...
* This fix handles Linux's nonportable
* abstract socket address extension.
*/
((*len) > 1 && (*src)[1] == '\0' ? 0 : 1)
#else
1
#endif
> sizeof(dst->sal.sun_path)) {
return str_einval;
}
sys_memzero((char*)dst, sizeof(struct sockaddr_un));
dst->sal.sun_family = family;
sys_memcpy(dst->sal.sun_path, (*src)+1, n);
*len = offsetof(struct sockaddr_un, sun_path) + n;
#ifndef NO_SA_LEN
dst->sal.sun_len = *len;
#endif
*src += 1 + n;
return NULL;
}
#endif
}
return str_eafnosupport;
}
/*
** Set an inaddr structure, address family comes from source data,
** or from argument if source data specifies constant address.
**
** *src = [TAG,P1,P0]
** when TAG = INET_AF_ANY | INET_AF_LOOPBACK
** *src = [TAG,P1,P0,X1,X2,...]
** when TAG = INET_AF_INET | INET_AF_INET6 | INET_AF_LOCAL
** *src = [TAG,Len,...]
** when TAG = INET_AF_LOCAL
*/
static char *inet_set_faddress(int family, inet_address* dst,
char* *src, ErlDrvSizeT* len) {
int tag;
if (*len < 1) return str_einval;
(*len) --;
tag = *((*src) ++);
switch (tag) {
case INET_AF_INET:
family = AF_INET;
break;
# if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6:
family = AF_INET6;
break;
# endif
# ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL: {
family = AF_UNIX;
break;
}
# endif
case INET_AF_ANY:
case INET_AF_LOOPBACK: {
int port;
if (*len < 2) return str_einval;
port = get_int16(*src);
switch (family) {
case AF_INET: {
struct in_addr addr;
switch (tag) {
case INET_AF_ANY:
addr.s_addr = sock_htonl(INADDR_ANY);
break;
case INET_AF_LOOPBACK:
addr.s_addr = sock_htonl(INADDR_LOOPBACK);
break;
default:
return str_einval;
}
sys_memzero((char*)dst, sizeof(struct sockaddr_in));
#ifndef NO_SA_LEN
dst->sai.sin_len = sizeof(struct sockaddr_in6);
#endif
dst->sai.sin_family = family;
dst->sai.sin_port = sock_htons(port);
dst->sai.sin_addr.s_addr = addr.s_addr;
*len = sizeof(struct sockaddr_in);
} break;
# if defined(HAVE_IN6) && defined(AF_INET6)
case AF_INET6: {
const struct in6_addr* paddr;
switch (tag) {
case INET_AF_ANY:
paddr = &in6addr_any;
break;
case INET_AF_LOOPBACK:
paddr = &in6addr_loopback;
break;
default:
return str_einval;
}
sys_memzero((char*)dst, sizeof(struct sockaddr_in6));
#ifndef NO_SA_LEN
dst->sai6.sin6_len = sizeof(struct sockaddr_in6);
#endif
dst->sai6.sin6_family = family;
dst->sai6.sin6_port = sock_htons(port);
dst->sai6.sin6_flowinfo = 0; /* XXX this may be set as well ?? */
dst->sai6.sin6_addr = *paddr;
*len = sizeof(struct sockaddr_in6);
} break;
# endif
default:
return str_einval;
}
*src += 2;
return NULL;
} break;
default:
return str_eafnosupport;
}
return inet_set_address(family, dst, src, len);
}
/* Get a inaddr structure
** src = inaddr structure
** dst is filled with [F,P1,P0,X1,....]
** *len is the length of structure
** where F is the family code (coded)
** and *len is the length of dst on return
** (suitable to deliver to erlang)
*/
static int inet_get_address(char* dst, inet_address* src, unsigned int* len)
{
/* Compare the code with inet_address_to_erlang() */
int family;
short port;
family = src->sa.sa_family;
if ((family == AF_INET) && (*len >= sizeof(struct sockaddr_in))) {
dst[0] = INET_AF_INET;
port = sock_ntohs(src->sai.sin_port);
put_int16(port, dst+1);
sys_memcpy(dst+3, (char*)&src->sai.sin_addr, sizeof(struct in_addr));
*len = 3 + sizeof(struct in_addr);
return 0;
}
#if defined(HAVE_IN6) && defined(AF_INET6)
else if ((family == AF_INET6) && (*len >= sizeof(struct sockaddr_in6))) {
dst[0] = INET_AF_INET6;
port = sock_ntohs(src->sai6.sin6_port);
put_int16(port, dst+1);
sys_memcpy(dst+3, (char*)&src->sai6.sin6_addr,sizeof(struct in6_addr));
*len = 3 + sizeof(struct in6_addr);
return 0;
}
#endif
#ifdef HAVE_SYS_UN_H
else if (family == AF_UNIX) {
size_t n, m;
if (*len < offsetof(struct sockaddr_un, sun_path)) return -1;
n = *len - offsetof(struct sockaddr_un, sun_path);
if (255 < n) return -1;
m = my_strnlen(src->sal.sun_path, n);
#ifdef __linux__
/* Assume that the address is a zero terminated string,
* except when the first byte is \0 i.e the string length is 0,
* then use the reported length instead.
* This fix handles Linux's nonportable
* abstract socket address extension.
*/
if (m == 0) m = n;
#endif
dst[0] = INET_AF_LOCAL;
dst[1] = (char) ((unsigned char) m);
sys_memcpy(dst+2, src->sal.sun_path, m);
*len = 1 + 1 + m;
return 0;
}
#endif
else if (family == AF_UNSPEC) {
dst[0] = INET_AF_UNSPEC;
*len = 1;
}
else {
dst[0] = INET_AF_UNDEFINED;
*len = 1;
}
return -1;
}
/* Same as the above, but take family from the address structure,
** and advance the address pointer to the next address
** according to the size of the current,
** and return the resulting encoded size
*/
static int
inet_address_to_erlang(char *dst, inet_address **src, SOCKLEN_T sz) {
/* Compare the code with inet_get_address() */
short port;
switch ((*src)->sa.sa_family) {
case AF_INET:
if (dst) {
dst[0] = INET_AF_INET;
port = sock_ntohs((*src)->sai.sin_port);
put_int16(port, dst+1);
sys_memcpy(dst+1+2, (char *) &(*src)->sai.sin_addr, 4);
}
(*src) = (inet_address *) (&(*src)->sai + 1);
return 1 + 2 + 4;
#if defined(HAVE_IN6) && defined(AF_INET6)
case AF_INET6:
if (dst) {
dst[0] = INET_AF_INET6;
port = sock_ntohs((*src)->sai6.sin6_port);
put_int16(port, dst+1);
VALGRIND_MAKE_MEM_DEFINED(&(*src)->sai6.sin6_addr,16); /* false undefs from syscall sctp_get[lp]addrs */
sys_memcpy(dst+1+2, (char *) &(*src)->sai6.sin6_addr, 16);
}
(*src) = (inet_address *) (&(*src)->sai6 + 1);
return 1 + 2 + 16;
#endif
#ifdef HAVE_SYS_UN_H
case AF_UNIX: {
size_t n, m;
if (sz < offsetof(struct sockaddr_un, sun_path)) return -1;
n = sz - offsetof(struct sockaddr_un, sun_path);
if (255 < n) return -1;
m = my_strnlen((*src)->sal.sun_path, n);
#ifdef __linux__
/* Assume that the address is a zero terminated string,
* except when the first byte is \0 i.e the string length is 0,
* Then use the reported length instead.
* This fix handles Linux's nonportable
* abstract socket address extension.
*/
if (m == 0) m = n;
#endif
if (dst) {
dst[0] = INET_AF_LOCAL;
dst[1] = (char) ((unsigned char) m);
sys_memcpy(dst+2, (*src)->sal.sun_path, m);
}
(*src) = (inet_address *) (&(*src)->sal + 1);
return 1 + 1 + m;
}
#endif
default:
return -1;
}
}
/* Encode n encoded addresses from addrs in the result buffer
*/
static ErlDrvSizeT reply_inet_addrs
(int n, inet_address *addrs, char **rbuf, ErlDrvSizeT rsize, SOCKLEN_T sz) {
inet_address *ia;
int i, s;
ErlDrvSizeT rlen;
if (IS_SOCKET_ERROR(n)) return ctl_error(sock_errno(), rbuf, rsize);
if (n == 0) return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
/* The sz argument is only used when we have got an actual size
* of addrs[0] from e.g getsockname() and then n == 1
* so we will loop over 1 element below. Otherwise sz
* would be expected to differ between addresses but that
* can only happen for AF_UNIX and we will only be called with
* n > 1 for SCTP and that will never (?) happen with AF_UNIX
*/
/* Calculate result length */
rlen = 1;
ia = addrs;
for (i = 0; i < n; i++) {
s = inet_address_to_erlang(NULL, &ia, sz);
if (s < 0) break;
rlen += s;
}
if (rlen > rsize) (*rbuf) = ALLOC(rlen);
(*rbuf)[0] = INET_REP_OK;
rlen = 1;
ia = addrs;
for (i = 0; i < n; i++) {
s = inet_address_to_erlang((*rbuf)+rlen, &ia, sz);
if (s < 0) break;
rlen += s;
}
return rlen;
}
static void desc_close(inet_descriptor* desc)
{
if (desc->s != INVALID_SOCKET) {
#ifdef __WIN32__
winsock_event_select(desc, FD_READ|FD_WRITE|FD_CLOSE, 0);
sock_close(desc->s);
desc->forced_events = 0;
desc->send_would_block = 0;
#endif
/*
* We should close the fd here, but the other driver might still
* be selecting on it.
*/
if (!desc->is_ignored)
driver_select(desc->port,(ErlDrvEvent)(long)desc->event,
ERL_DRV_USE, 0);
else
inet_stop_select((ErlDrvEvent)(long)desc->event,NULL);
desc->event = INVALID_EVENT; /* closed by stop_select callback */
desc->s = INVALID_SOCKET;
desc->event_mask = 0;
/* mark as disconnected in case when socket is left lingering due to
* {exit_on_close, false} option in gen_tcp socket creation. Next
* write to socket should produce {error, enotconn} and send a
* message {tcp_error,#Port<>,econnreset} */
desc->state &= ~INET_STATE_CONNECTED;
}
}
static void desc_close_read(inet_descriptor* desc)
{
if (desc->s != INVALID_SOCKET) {
#ifdef __WIN32__
/* This call cannot be right???
* We want to turn off read events but keep any write events.
* But on windows driver_select(...,READ,1) is only used as a
* way to hook into the pollset. sock_select is used to control
* which events to wait for.
* It seems we used to disabled all events for the socket here.
*
driver_select(desc->port, desc->event, DO_READ, 0); REMOVED */
#endif
sock_select(desc, FD_READ | FD_CLOSE, 0);
}
}
static int erl_inet_close(inet_descriptor* desc)
{
free_subscribers(&desc->empty_out_q_subs);
if ((desc->prebound == 0) && (desc->state & INET_F_OPEN)) {
desc_close(desc);
desc->state = INET_STATE_CLOSED;
} else if (desc->prebound && (desc->s != INVALID_SOCKET)) {
sock_select(desc, FD_READ | FD_WRITE | FD_CLOSE | ERL_DRV_USE_NO_CALLBACK, 0);
desc->event_mask = 0;
#ifdef __WIN32__
desc->forced_events = 0;
desc->send_would_block = 0;
#endif
}
return 0;
}
static ErlDrvSSizeT inet_ctl_open(inet_descriptor* desc, int domain, int type,
char** rbuf, ErlDrvSizeT rsize)
{
int save_errno;
int protocol;
#ifdef HAVE_SETNS
int current_ns, new_ns;
current_ns = new_ns = 0;
#endif
save_errno = 0;
if (desc->state != INET_STATE_CLOSED)
return ctl_xerror(EXBADSEQ, rbuf, rsize);
#ifdef HAVE_SETNS
if (desc->netns != NULL) {
/* Temporarily change network namespace for this thread
* while creating the socket
*/
current_ns = open("/proc/self/ns/net", O_RDONLY);
if (current_ns == INVALID_SOCKET)
return ctl_error(sock_errno(), rbuf, rsize);
new_ns = open(desc->netns, O_RDONLY);
if (new_ns == INVALID_SOCKET) {
save_errno = sock_errno();
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
return ctl_error(save_errno, rbuf, rsize);
}
if (setns(new_ns, CLONE_NEWNET) != 0) {
save_errno = sock_errno();
while (close(new_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
return ctl_error(save_errno, rbuf, rsize);
}
else {
while (close(new_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
}
}
#endif
protocol = desc->sprotocol;
#ifdef HAVE_SYS_UN_H
if (domain == AF_UNIX) protocol = 0;
#endif
if ((desc->s = sock_open(domain, type, protocol)) == INVALID_SOCKET)
save_errno = sock_errno();
#ifdef HAVE_SETNS
if (desc->netns != NULL) {
/* Restore network namespace */
if (setns(current_ns, CLONE_NEWNET) != 0) {
/* XXX Failed to restore network namespace.
* What to do? Tidy up and return an error...
* Note that the thread now might still be in the namespace.
* Can this even happen? Should the emulator be aborted?
*/
if (desc->s != INVALID_SOCKET)
save_errno = sock_errno();
while (close(desc->s) == INVALID_SOCKET &&
sock_errno() == EINTR);
desc->s = INVALID_SOCKET;
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
return ctl_error(save_errno, rbuf, rsize);
}
else {
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
}
}
#endif
if (desc->s == INVALID_SOCKET)
return ctl_error(save_errno, rbuf, rsize);
if ((desc->event = sock_create_event(desc)) == INVALID_EVENT) {
save_errno = sock_errno();
while (close(desc->s) == INVALID_SOCKET &&
sock_errno() == EINTR);
desc->s = INVALID_SOCKET;
return ctl_error(save_errno, rbuf, rsize);
}
SET_NONBLOCKING(desc->s);
#ifdef __WIN32__
driver_select(desc->port, desc->event, ERL_DRV_READ, 1);
#endif
desc->state = INET_STATE_OPEN;
desc->stype = type;
desc->sfamily = domain;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
/* as inet_open but pass in an open socket (MUST BE OF RIGHT TYPE) */
static ErlDrvSSizeT inet_ctl_fdopen(inet_descriptor* desc, int domain, int type,
SOCKET s, Uint32 bound,
char** rbuf, ErlDrvSizeT rsize)
{
inet_address name;
unsigned int sz;
if (bound) {
/* check that it is a socket and that the socket is bound */
sz = sizeof(name);
sys_memzero((char *) &name, sz);
if (IS_SOCKET_ERROR(sock_name(s, (struct sockaddr*) &name, &sz)))
return ctl_error(sock_errno(), rbuf, rsize);
if (name.sa.sa_family != domain)
return ctl_error(EINVAL, rbuf, rsize);
}
desc->s = s;
if ((desc->event = sock_create_event(desc)) == INVALID_EVENT)
return ctl_error(sock_errno(), rbuf, rsize);
SET_NONBLOCKING(desc->s);
#ifdef __WIN32__
driver_select(desc->port, desc->event, ERL_DRV_READ, 1);
#endif
desc->state = INET_STATE_OPEN;
if (type == SOCK_STREAM) { /* check if connected */
sz = sizeof(name);
if (!IS_SOCKET_ERROR(sock_peer(s, (struct sockaddr*) &name, &sz))) {
desc->state = INET_STATE_CONNECTED;
}
}
desc->prebound = 1; /* used to prevent a real close since
* the fd probably comes from an
* external wrapper program, so it is
* not certain that we can open it again */
desc->stype = type;
desc->sfamily = domain;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
/*
** store interface info as: (bytes)
** [Len] Name(Len) Flags(1) addr(4) baddr(4) mask(4) bw(4)
*/
struct addr_if {
char name[INET_IFNAMSIZ];
long flags; /* coded flags */
struct in_addr addr; /* interface address */
struct in_addr baddr; /* broadcast address */
struct in_addr mask; /* netmask */
};
#ifndef SIOCGIFNETMASK
static struct in_addr net_mask(struct in_addr in)
{
register u_long i = sock_ntohl(in.s_addr);
if (IN_CLASSA(i))
in.s_addr = sock_htonl(IN_CLASSA_NET);
else if (IN_CLASSB(i))
in.s_addr = sock_htonl(IN_CLASSB_NET);
else
in.s_addr = sock_htonl(IN_CLASSC_NET);
return in;
}
#endif
#if defined(__WIN32__) && defined(SIO_GET_INTERFACE_LIST)
/* format address in dot notation */
static char* fmt_addr(unsigned long x, char* ptr)
{
int i;
for (i = 0; i < 4; i++) {
int nb[3];
int y = (x >> 24) & 0xff;
x <<= 8;
nb[0] = y % 10; y /= 10;
nb[1] = y % 10; y /= 10;
nb[2] = y % 10; y /= 10;
switch((nb[2] ? 3 : (nb[1] ? 2 : 1))) {
case 3: *ptr++ = nb[2] + '0';
case 2: *ptr++ = nb[1] + '0';
case 1: *ptr++ = nb[0] + '0';
}
*ptr++ = '.';
}
*(ptr-1) = '\0';
return ptr;
}
static int parse_addr(char* ptr, int n, long* x)
{
long addr = 0;
int dots = 0;
int digs = 0;
int v = 0;
while(n--) {
switch(*ptr) {
case '0': case '1': case '2':case '3':case '4':case '5':
case '6': case '7': case '8':case '9':
v = v*10 + *ptr - '0';
if (++digs > 3) return -1;
break;
case '.':
if ((dots>2) || (digs==0) || (digs > 3) || (v > 0xff)) return -1;
dots++;
digs = 0;
addr = (addr << 8) | v;
v = 0;
break;
default:
return -1;
}
ptr++;
}
if ((dots!=3) || (digs==0) || (digs > 3) || (v > 0xff)) return -1;
addr = (addr << 8) | v;
*x = addr;
return 0;
}
#endif
#define buf_check(ptr, end, n) \
do { if ((end)-(ptr) < (n)) goto error; } while(0)
static char* sockaddr_to_buf(struct sockaddr* addr, char* ptr, char* end)
{
if (addr->sa_family == AF_INET || addr->sa_family == 0) {
struct in_addr *p = &(((struct sockaddr_in*) addr)->sin_addr);
buf_check(ptr, end, 1 + sizeof(struct in_addr));
*ptr = INET_AF_INET;
sys_memcpy(ptr+1, (char*)p, sizeof(struct in_addr));
return ptr + 1 + sizeof(struct in_addr);
}
#if defined(HAVE_IN6) && defined(AF_INET6)
else if (addr->sa_family == AF_INET6) {
struct in6_addr *p = &(((struct sockaddr_in6*) addr)->sin6_addr);
buf_check(ptr, end, 1 + sizeof(struct in6_addr));
*ptr = INET_AF_INET6;
sys_memcpy(ptr+1, (char*)p, sizeof(struct in6_addr));
return ptr + 1 + sizeof(struct in6_addr);
}
#endif
#if defined(AF_LINK)
else if (addr->sa_family == AF_LINK) {
struct sockaddr_dl *sdl_p = (struct sockaddr_dl*) addr;
buf_check(ptr, end, 2 + sdl_p->sdl_alen);
put_int16(sdl_p->sdl_alen, ptr); ptr += 2;
sys_memcpy(ptr, sdl_p->sdl_data + sdl_p->sdl_nlen, sdl_p->sdl_alen);
return ptr + sdl_p->sdl_alen;
}
#endif
#if defined(AF_PACKET) && defined(HAVE_NETPACKET_PACKET_H)
else if(addr->sa_family == AF_PACKET) {
struct sockaddr_ll *sll_p = (struct sockaddr_ll*) addr;
buf_check(ptr, end, 2 + sll_p->sll_halen);
put_int16(sll_p->sll_halen, ptr); ptr += 2;
sys_memcpy(ptr, sll_p->sll_addr, sll_p->sll_halen);
return ptr + sll_p->sll_halen;
}
#endif
return ptr;
error:
return NULL;
}
/* sockaddr_bufsz_need
* Returns the number of bytes needed to store the information
* through sockaddr_to_buf
*/
static size_t sockaddr_bufsz_need(struct sockaddr* addr)
{
if (addr->sa_family == AF_INET || addr->sa_family == 0) {
return 1 + sizeof(struct in_addr);
}
#if defined(HAVE_IN6) && defined(AF_INET6)
else if (addr->sa_family == AF_INET6) {
return 1 + sizeof(struct in6_addr);
}
#endif
#if defined(AF_LINK)
if (addr->sa_family == AF_LINK) {
struct sockaddr_dl *sdl_p = (struct sockaddr_dl*) addr;
return 2 + sdl_p->sdl_alen;
}
#endif
#if defined(AF_PACKET) && defined(HAVE_NETPACKET_PACKET_H)
else if(addr->sa_family == AF_PACKET) {
struct sockaddr_ll *sll_p = (struct sockaddr_ll*) addr;
return 2 + sll_p->sll_halen;
}
#endif
return 0;
}
static char* buf_to_sockaddr(char* ptr, char* end, struct sockaddr* addr)
{
buf_check(ptr,end,1);
switch (*ptr++) {
case INET_AF_INET: {
struct in_addr *p = &((struct sockaddr_in*)addr)->sin_addr;
buf_check(ptr,end,sizeof(struct in_addr));
sys_memcpy((char*) p, ptr, sizeof(struct in_addr));
addr->sa_family = AF_INET;
return ptr + sizeof(struct in_addr);
}
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6: {
struct in6_addr *p = &((struct sockaddr_in6*)addr)->sin6_addr;
buf_check(ptr,end,sizeof(struct in6_addr));
sys_memcpy((char*) p, ptr, sizeof(struct in6_addr));
addr->sa_family = AF_INET6;
return ptr + sizeof(struct in6_addr);
}
#endif
}
error:
return NULL;
}
#if defined (IFF_POINTOPOINT)
#define IFGET_FLAGS(cflags) IFGET_FLAGS_P2P(cflags, IFF_POINTOPOINT)
#elif defined IFF_POINTTOPOINT
#define IFGET_FLAGS(cflags) IFGET_FLAGS_P2P(cflags, IFF_POINTTOPOINT)
#endif
#define IFGET_FLAGS_P2P(cflags, iff_ptp) \
((((cflags) & IFF_UP) ? INET_IFF_UP : 0) | \
(((cflags) & IFF_BROADCAST) ? INET_IFF_BROADCAST : 0) | \
(((cflags) & IFF_LOOPBACK) ? INET_IFF_LOOPBACK : 0) | \
(((cflags) & iff_ptp) ? INET_IFF_POINTTOPOINT : 0) | \
(((cflags) & IFF_UP) ? INET_IFF_RUNNING : 0) | /* emulate running ? */ \
(((cflags) & IFF_MULTICAST) ? INET_IFF_MULTICAST : 0))
#if defined(__WIN32__) && defined(SIO_GET_INTERFACE_LIST)
static ErlDrvSSizeT inet_ctl_getiflist(inet_descriptor* desc,
char** rbuf, ErlDrvSizeT rsize)
{
char ifbuf[BUFSIZ];
char sbuf[BUFSIZ];
char* sptr;
INTERFACE_INFO* ifp;
DWORD len;
ErlDrvSizeT n;
int err;
ifp = (INTERFACE_INFO*) ifbuf;
len = 0;
err = WSAIoctl(desc->s, SIO_GET_INTERFACE_LIST, NULL, 0,
(LPVOID) ifp, BUFSIZ, (LPDWORD) &len,
NULL, NULL);
if (err == SOCKET_ERROR)
return ctl_error(sock_errno(), rbuf, rsize);
n = (len + sizeof(INTERFACE_INFO) - 1) / sizeof(INTERFACE_INFO);
sptr = sbuf;
while(n--) {
if (((struct sockaddr*)&ifp->iiAddress)->sa_family == desc->sfamily) {
struct in_addr sina = ((struct sockaddr_in*)&ifp->iiAddress)->sin_addr;
/* discard INADDR_ANY interface address */
if (sina.s_addr != INADDR_ANY)
sptr = fmt_addr(sock_ntohl(sina.s_addr), sptr);
}
ifp++;
}
return ctl_reply(INET_REP_OK, sbuf, sptr - sbuf, rbuf, rsize);
}
/* input is an ip-address in string format i.e A.B.C.D
** scan the INTERFACE_LIST to get the options
*/
static ErlDrvSSizeT inet_ctl_ifget(inet_descriptor* desc, char* buf,
ErlDrvSizeT len, char** rbuf, ErlDrvSizeT rsize)
{
char ifbuf[BUFSIZ];
int n;
char sbuf[BUFSIZ];
char* sptr;
char* s_end = sbuf + BUFSIZ;
int namlen;
int err;
INTERFACE_INFO* ifp;
long namaddr;
if ((len == 0) || ((namlen = get_int8(buf)) > len))
goto error;
if (parse_addr(buf+1, namlen, &namaddr) < 0)
goto error;
namaddr = sock_ntohl(namaddr);
buf += (namlen+1);
len -= (namlen+1);
ifp = (INTERFACE_INFO*) ifbuf;
err = WSAIoctl(desc->s, SIO_GET_INTERFACE_LIST, NULL, 0,
(LPVOID) ifp, BUFSIZ, (LPDWORD) &n,
NULL, NULL);
if (err == SOCKET_ERROR) {
return ctl_error(sock_errno(), rbuf, rsize);
}
n = (n + sizeof(INTERFACE_INFO) - 1) / sizeof(INTERFACE_INFO);
/* find interface */
while(n) {
if (((struct sockaddr_in*)&ifp->iiAddress)->sin_addr.s_addr == namaddr)
break;
ifp++;
n--;
}
if (n == 0)
goto error;
sptr = sbuf;
while (len--) {
switch(*buf++) {
case INET_IFOPT_ADDR:
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_ADDR;
if ((sptr = sockaddr_to_buf((struct sockaddr *)&ifp->iiAddress,
sptr, s_end)) == NULL)
goto error;
break;
case INET_IFOPT_HWADDR:
break;
case INET_IFOPT_BROADADDR:
#ifdef SIOCGIFBRDADDR
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_BROADADDR;
if ((sptr=sockaddr_to_buf((struct sockaddr *)
&ifp->iiBroadcastAddress,sptr,s_end))
== NULL)
goto error;
#endif
break;
case INET_IFOPT_DSTADDR:
break;
case INET_IFOPT_NETMASK:
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_NETMASK;
if ((sptr = sockaddr_to_buf((struct sockaddr *)
&ifp->iiNetmask,sptr,s_end)) == NULL)
goto error;
break;
case INET_IFOPT_MTU:
break;
case INET_IFOPT_FLAGS: {
int flags = ifp->iiFlags;
/* just enumerate the interfaces (no names) */
buf_check(sptr, s_end, 5);
*sptr++ = INET_IFOPT_FLAGS;
put_int32(IFGET_FLAGS(flags), sptr);
sptr += 4;
break;
}
default:
goto error;
}
}
return ctl_reply(INET_REP_OK, sbuf, sptr - sbuf, rbuf, rsize);
error:
return ctl_error(EINVAL, rbuf, rsize);
}
/* not supported */
static ErlDrvSSizeT inet_ctl_ifset(inet_descriptor* desc,
char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
#elif defined(SIOCGIFCONF) && defined(SIOCSIFFLAGS)
/* cygwin has SIOCGIFCONF but not SIOCSIFFLAGS (Nov 2002) */
#define VOIDP(x) ((void*)(x))
#if defined(AF_LINK) && !defined(NO_SA_LEN)
#define SIZEA(p) (((p).sa_len > sizeof(p)) ? (p).sa_len : sizeof(p))
#else
#define SIZEA(p) (sizeof (p))
#endif
static int get_ifconf(SOCKET s, struct ifconf *ifcp) {
int ifc_len = 0;
int buflen = 100 * sizeof(struct ifreq);
char *buf = ALLOC(buflen);
for (;;) {
ifcp->ifc_len = buflen;
ifcp->ifc_buf = buf;
if (ioctl(s, SIOCGIFCONF, (char *)ifcp) < 0) {
int res = sock_errno();
if (res != EINVAL || ifc_len) {
FREE(buf);
return -1;
}
} else {
if (ifcp->ifc_len == ifc_len) break; /* buf large enough */
ifc_len = ifcp->ifc_len;
}
buflen += 10 * sizeof(struct ifreq);
buf = (char *)REALLOC(buf, buflen);
}
return 0;
}
static void free_ifconf(struct ifconf *ifcp) {
FREE(ifcp->ifc_buf);
}
static ErlDrvSSizeT inet_ctl_getiflist(inet_descriptor* desc,
char** rbuf, ErlDrvSizeT rsize)
{
struct ifconf ifc;
struct ifreq *ifrp;
char *sbuf, *sp;
ErlDrvSizeT i;
/* Courtesy of Per Bergqvist and W. Richard Stevens */
if (get_ifconf(desc->s, &ifc) < 0) {
return ctl_error(sock_errno(), rbuf, rsize);
}
sp = sbuf = ALLOC(ifc.ifc_len+1);
*sp++ = INET_REP_OK;
i = 0;
for (;;) {
ErlDrvSizeT n;
ifrp = (struct ifreq *) VOIDP(ifc.ifc_buf + i);
n = sizeof(ifrp->ifr_name) + SIZEA(ifrp->ifr_addr);
if (n < sizeof(*ifrp)) n = sizeof(*ifrp);
if (i+n > ifc.ifc_len) break;
i += n;
switch (ifrp->ifr_addr.sa_family) {
#if defined(HAVE_IN6) && defined(AF_INET6)
case AF_INET6:
#endif
case AF_INET:
ASSERT(sp+IFNAMSIZ+1 < sbuf+ifc.ifc_len+1);
strncpy(sp, ifrp->ifr_name, IFNAMSIZ);
sp[IFNAMSIZ] = '\0';
sp += strlen(sp), ++sp;
}
if (i >= ifc.ifc_len) break;
}
free_ifconf(&ifc);
*rbuf = sbuf;
return sp - sbuf;
}
#ifdef HAVE_LIBDLPI_H
#include <libdlpi.h>
static int hwaddr_libdlpi_lookup(const char *ifnm,
uchar_t *addr, size_t *alen)
{
dlpi_handle_t handle;
dlpi_info_t linkinfo;
int ret = -1;
if (dlpi_open(ifnm, &handle, 0) != DLPI_SUCCESS) {
return -1;
}
if (dlpi_get_physaddr(handle, DL_CURR_PHYS_ADDR,
addr, alen) == DLPI_SUCCESS &&
dlpi_info(handle, &linkinfo, 0) == DLPI_SUCCESS)
{
ret = 0;
}
dlpi_close(handle);
return ret;
}
#endif
#ifdef HAVE_GETIFADDRS
/* Returns 0 for success and errno() for failure */
static int call_getifaddrs(inet_descriptor* desc_p, struct ifaddrs **ifa_pp)
{
int result, save_errno;
#ifdef HAVE_SETNS
int current_ns;
current_ns = 0;
if (desc_p->netns != NULL) {
int new_ns;
/* Temporarily change network namespace for this thread
* over the getifaddrs() call
*/
current_ns = open("/proc/self/ns/net", O_RDONLY);
if (current_ns == INVALID_SOCKET)
return sock_errno();
new_ns = open(desc_p->netns, O_RDONLY);
if (new_ns == INVALID_SOCKET) {
save_errno = sock_errno();
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
return save_errno;
}
if (setns(new_ns, CLONE_NEWNET) != 0) {
save_errno = sock_errno();
while (close(new_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
return save_errno;
}
else {
while (close(new_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
}
}
#endif
save_errno = 0;
result = getifaddrs(ifa_pp);
if (result < 0)
save_errno = sock_errno();
#ifdef HAVE_SETNS
if (desc_p->netns != NULL) {
/* Restore network namespace */
if (setns(current_ns, CLONE_NEWNET) != 0) {
/* XXX Failed to restore network namespace.
* What to do? Tidy up and return an error...
* Note that the thread now might still be in the set namespace.
* Can this even happen? Should the emulator be aborted?
*/
if (result >= 0) {
/* We got a result but have to waste it */
save_errno = sock_errno();
freeifaddrs(*ifa_pp);
}
}
while (close(current_ns) == INVALID_SOCKET &&
sock_errno() == EINTR);
}
#endif
return save_errno;
}
#endif /* #ifdef HAVE_GETIFADDRS */
/* FIXME: temporary hack */
#ifndef IFHWADDRLEN
#define IFHWADDRLEN 6
#endif
static ErlDrvSSizeT inet_ctl_ifget(inet_descriptor* desc,
char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
char sbuf[BUFSIZ];
char* sptr;
char* s_end = sbuf + BUFSIZ;
struct ifreq ifreq;
int namlen;
if ((len == 0) || ((namlen = get_int8(buf)) > len))
goto error;
sys_memset(ifreq.ifr_name, '\0', IFNAMSIZ);
sys_memcpy(ifreq.ifr_name, buf+1,
(namlen >= IFNAMSIZ) ? IFNAMSIZ-1 : namlen);
buf += (namlen+1);
len -= (namlen+1);
sptr = sbuf;
while (len--) {
switch(*buf++) {
case INET_IFOPT_ADDR:
if (ioctl(desc->s, SIOCGIFADDR, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_ADDR;
if ((sptr = sockaddr_to_buf(&ifreq.ifr_addr, sptr, s_end)) == NULL)
goto error;
break;
case INET_IFOPT_HWADDR: {
#ifdef HAVE_LIBDLPI_H
/*
** OpenSolaris have SIGCGIFHWADDR, but no ifr_hwaddr member..
** The proper way to get the mac address would be to
** use libdlpi...
*/
uchar_t addr[DLPI_PHYSADDR_MAX];
size_t alen = sizeof(addr);
if (hwaddr_libdlpi_lookup(ifreq.ifr_name, addr, &alen) == 0) {
buf_check(sptr, s_end, 1+2+alen);
*sptr++ = INET_IFOPT_HWADDR;
put_int16(alen, sptr);
sptr += 2;
sys_memcpy(sptr, addr, alen);
sptr += alen;
}
#elif defined(SIOCGIFHWADDR) && defined(HAVE_STRUCT_IFREQ_IFR_HWADDR)
if (ioctl(desc->s, SIOCGIFHWADDR, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 1+2+IFHWADDRLEN);
*sptr++ = INET_IFOPT_HWADDR;
put_int16(IFHWADDRLEN, sptr); sptr += 2;
/* raw memcpy (fix include autoconf later) */
sys_memcpy(sptr, (char*)(&ifreq.ifr_hwaddr.sa_data), IFHWADDRLEN);
sptr += IFHWADDRLEN;
#elif defined(SIOCGENADDR) && defined(HAVE_STRUCT_IFREQ_IFR_ENADDR)
if (ioctl(desc->s, SIOCGENADDR, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 1+2+sizeof(ifreq.ifr_enaddr));
*sptr++ = INET_IFOPT_HWADDR;
put_int16(sizeof(ifreq.ifr_enaddr), sptr); sptr += 2;
/* raw memcpy (fix include autoconf later) */
sys_memcpy(sptr, (char*)(&ifreq.ifr_enaddr),
sizeof(ifreq.ifr_enaddr));
sptr += sizeof(ifreq.ifr_enaddr);
#elif defined(HAVE_GETIFADDRS) && defined(AF_LINK)
struct ifaddrs *ifa, *ifp;
struct sockaddr_dl *sdlp;
int found = 0;
if (call_getifaddrs(desc, &ifa) != 0)
goto error;
for (ifp = ifa; ifp; ifp = ifp->ifa_next) {
if ((ifp->ifa_addr->sa_family == AF_LINK) &&
(sys_strcmp(ifp->ifa_name, ifreq.ifr_name) == 0)) {
found = 1;
break;
}
}
if (found == 0) {
freeifaddrs(ifa);
break;
}
sdlp = (struct sockaddr_dl *)ifp->ifa_addr;
buf_check(sptr, s_end, 1+2+sdlp->sdl_alen);
*sptr++ = INET_IFOPT_HWADDR;
put_int16(sdlp->sdl_alen, sptr); sptr += 2;
sys_memcpy(sptr,
sdlp->sdl_data + sdlp->sdl_nlen,
sdlp->sdl_alen);
sptr += sdlp->sdl_alen;
freeifaddrs(ifa);
#endif
break;
}
case INET_IFOPT_BROADADDR:
#ifdef SIOCGIFBRDADDR
if (ioctl(desc->s, SIOCGIFBRDADDR, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_BROADADDR;
if ((sptr=sockaddr_to_buf(&ifreq.ifr_broadaddr,sptr,s_end)) == NULL)
goto error;
#endif
break;
case INET_IFOPT_DSTADDR:
#ifdef SIOCGIFDSTADDR
if (ioctl(desc->s, SIOCGIFDSTADDR, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_DSTADDR;
if ((sptr = sockaddr_to_buf(&ifreq.ifr_dstaddr,sptr,s_end)) == NULL)
goto error;
#endif
break;
case INET_IFOPT_NETMASK:
#if defined(SIOCGIFNETMASK)
if (ioctl(desc->s, SIOCGIFNETMASK, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_NETMASK;
#if defined(ifr_netmask)
sptr = sockaddr_to_buf(&ifreq.ifr_netmask,sptr,s_end);
#else
/* SIOCGNETMASK exist but not macro ??? */
sptr = sockaddr_to_buf(&ifreq.ifr_addr,sptr,s_end);
#endif
if (sptr == NULL)
goto error;
#else
if (ioctl(desc->s, SIOCGIFADDR, (char *)&ifreq) < 0)
break;
else {
struct sockadd_in* ap;
/* emulate netmask,
* (wasted stuff since noone uses classes)
*/
buf_check(sptr, s_end, 1);
*sptr++ = INET_IFOPT_NETMASK;
ap = (struct sockaddr_in*) VOIDP(&ifreq.ifr_addr);
ap->sin_addr = net_mask(ap->sin_addr);
if ((sptr = sockaddr_to_buf(&ifreq.ifr_addr,sptr,s_end)) == NULL)
goto error;
}
#endif
break;
case INET_IFOPT_MTU: {
#if defined(SIOCGIFMTU) && defined(ifr_mtu)
int n;
if (ioctl(desc->s, SIOCGIFMTU, (char *)&ifreq) < 0)
break;
buf_check(sptr, s_end, 5);
*sptr++ = INET_IFOPT_MTU;
n = ifreq.ifr_mtu;
put_int32(n, sptr);
sptr += 4;
#endif
break;
}
case INET_IFOPT_FLAGS: {
int flags;
if (ioctl(desc->s, SIOCGIFFLAGS, (char*)&ifreq) < 0)
flags = 0;
else
flags = ifreq.ifr_flags;
buf_check(sptr, s_end, 5);
*sptr++ = INET_IFOPT_FLAGS;
put_int32(IFGET_FLAGS(flags), sptr);
sptr += 4;
break;
}
default:
goto error;
}
}
return ctl_reply(INET_REP_OK, sbuf, sptr - sbuf, rbuf, rsize);
error:
return ctl_error(EINVAL, rbuf, rsize);
}
static ErlDrvSSizeT inet_ctl_ifset(inet_descriptor* desc,
char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
struct ifreq ifreq;
int namlen;
char* b_end = buf + len;
if ((len == 0) || ((namlen = get_int8(buf)) > len))
goto error;
sys_memset(ifreq.ifr_name, '\0', IFNAMSIZ);
sys_memcpy(ifreq.ifr_name, buf+1,
(namlen >= IFNAMSIZ) ? IFNAMSIZ-1 : namlen);
buf += (namlen+1);
len -= (namlen+1);
while(buf < b_end) {
switch(*buf++) {
case INET_IFOPT_ADDR:
if ((buf = buf_to_sockaddr(buf, b_end, &ifreq.ifr_addr)) == NULL)
goto error;
(void) ioctl(desc->s, SIOCSIFADDR, (char*)&ifreq);
break;
case INET_IFOPT_HWADDR: {
unsigned int hwalen;
buf_check(buf, b_end, 2);
hwalen = get_int16(buf); buf += 2;
buf_check(buf, b_end, hwalen);
#ifdef SIOCSIFHWADDR
/* raw memcpy (fix include autoconf later) */
sys_memset((char*)(&ifreq.ifr_hwaddr.sa_data),
'\0', sizeof(ifreq.ifr_hwaddr.sa_data));
sys_memcpy((char*)(&ifreq.ifr_hwaddr.sa_data), buf, hwalen);
(void) ioctl(desc->s, SIOCSIFHWADDR, (char *)&ifreq);
#endif
buf += hwalen;
break;
}
case INET_IFOPT_BROADADDR:
#ifdef SIOCSIFBRDADDR
if ((buf = buf_to_sockaddr(buf, b_end, &ifreq.ifr_broadaddr)) == NULL)
goto error;
(void) ioctl(desc->s, SIOCSIFBRDADDR, (char *)&ifreq);
#endif
break;
case INET_IFOPT_DSTADDR:
#ifdef SIOCSIFDSTADDR
if ((buf = buf_to_sockaddr(buf, b_end, &ifreq.ifr_dstaddr)) == NULL)
goto error;
(void) ioctl(desc->s, SIOCSIFDSTADDR, (char *)&ifreq);
#endif
break;
case INET_IFOPT_NETMASK:
#ifdef SIOCSIFNETMASK
#if defined(ifr_netmask)
buf = buf_to_sockaddr(buf,b_end, &ifreq.ifr_netmask);
#else
buf = buf_to_sockaddr(buf,b_end, &ifreq.ifr_addr);
#endif
if (buf == NULL)
goto error;
(void) ioctl(desc->s, SIOCSIFNETMASK, (char *)&ifreq);
#endif
break;
case INET_IFOPT_MTU:
buf_check(buf, b_end, 4);
#if defined(SIOCSIFMTU) && defined(ifr_mtu)
ifreq.ifr_mtu = get_int32(buf);
(void) ioctl(desc->s, SIOCSIFMTU, (char *)&ifreq);
#endif
buf += 4;
break;
case INET_IFOPT_FLAGS: {
int flags0;
int flags;
int eflags;
buf_check(buf, b_end, 4);
eflags = get_int32(buf);
/* read current flags */
if (ioctl(desc->s, SIOCGIFFLAGS, (char*)&ifreq) < 0)
flags0 = flags = 0;
else
flags0 = flags = ifreq.ifr_flags;
/* update flags */
if (eflags & INET_IFF_UP) flags |= IFF_UP;
if (eflags & INET_IFF_DOWN) flags &= ~IFF_UP;
if (eflags & INET_IFF_BROADCAST) flags |= IFF_BROADCAST;
if (eflags & INET_IFF_NBROADCAST) flags &= ~IFF_BROADCAST;
if (eflags & INET_IFF_POINTTOPOINT) flags |= IFF_POINTOPOINT;
if (eflags & INET_IFF_NPOINTTOPOINT) flags &= ~IFF_POINTOPOINT;
if (flags != flags0) {
ifreq.ifr_flags = flags;
(void) ioctl(desc->s, SIOCSIFFLAGS, (char*)&ifreq);
}
buf += 4;
break;
}
default:
goto error;
}
}
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
error:
return ctl_error(EINVAL, rbuf, rsize);
}
#else
static ErlDrvSSizeT inet_ctl_getiflist(inet_descriptor* desc,
char** rbuf, ErlDrvSizeT rsize)
{
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
static ErlDrvSSizeT inet_ctl_ifget(inet_descriptor* desc,
char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
static ErlDrvSSizeT inet_ctl_ifset(inet_descriptor* desc,
char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
#endif
#if defined(__WIN32__) || defined(HAVE_GETIFADDRS)
/* Latin-1 to utf8 */
static int utf8_len(const char *c, int m) {
int l;
for (l = 0; m; c++, l++, m--) {
if (*c == '\0') break;
if ((*c & 0x7f) != *c) l++;
}
return l;
}
static void utf8_encode(const char *c, int m, char *p) {
for (; m; c++, m--) {
if (*c == '\0') break;
if ((*c & 0x7f) != *c) {
*p++ = (char) (0xC0 | (0x03 & (*c >> 6)));
*p++ = (char) (0x80 | (0x3F & *c));
} else {
*p++ = (char) *c;
}
}
}
#endif
#if defined(__WIN32__)
static void set_netmask_bytes(char *c, int len, int pref_len) {
int i, m;
for (i = 0, m = pref_len >> 3; i < m && i < len; i++) c[i] = '\xFF';
if (i < len) c[i++] = 0xFF << (8 - (pref_len & 7));
for (; i < len; i++) c[i] = '\0';
}
int eq_masked_bytes(char *a, char *b, int pref_len) {
int i, m;
for (i = 0, m = pref_len >> 3; i < m; i++) {
if (a[i] != b[i]) return 0;
}
m = pref_len & 7;
if (m) {
m = 0xFF & (0xFF << (8 - m));
if ((a[i] & m) != (b[i] & m)) return 0;
}
return !0;
}
static ErlDrvSSizeT inet_ctl_getifaddrs(inet_descriptor* desc_p,
char **rbuf_pp, ErlDrvSizeT rsize)
{
int i;
DWORD ret, n;
IP_INTERFACE_INFO *info_p;
MIB_IPADDRTABLE *ip_addrs_p;
IP_ADAPTER_ADDRESSES *ip_adaddrs_p, *ia_p;
char *buf_p;
char *buf_alloc_p;
ErlDrvSizeT buf_size = 512;
# define BUF_ENSURE(Size) \
do { \
int NEED_, GOT_ = buf_p - buf_alloc_p; \
NEED_ = GOT_ + (Size); \
if (NEED_ > buf_size) { \
buf_size = NEED_ + 512; \
buf_alloc_p = REALLOC(buf_alloc_p, buf_size); \
buf_p = buf_alloc_p + GOT_; \
} \
} while(0)
# define SOCKADDR_TO_BUF(opt, sa) \
do { \
if (sa) { \
char *P_; \
*buf_p++ = (opt); \
while (! (P_ = sockaddr_to_buf((sa), buf_p, \
buf_alloc_p+buf_size))) { \
int GOT_ = buf_p - buf_alloc_p; \
buf_size += 512; \
buf_alloc_p = REALLOC(buf_alloc_p, buf_size); \
buf_p = buf_alloc_p + GOT_; \
} \
if (P_ == buf_p) { \
buf_p--; \
} else { \
buf_p = P_; \
} \
} \
} while (0)
{
/* Try GetAdaptersAddresses, if it is available */
unsigned long ip_adaddrs_size = 16 * 1024;
ULONG family = AF_UNSPEC;
ULONG flags =
GAA_FLAG_INCLUDE_PREFIX | GAA_FLAG_SKIP_ANYCAST |
GAA_FLAG_SKIP_DNS_SERVER | GAA_FLAG_SKIP_FRIENDLY_NAME |
GAA_FLAG_SKIP_MULTICAST;
ULONG (WINAPI *fpGetAdaptersAddresses)
(ULONG, ULONG, PVOID, PIP_ADAPTER_ADDRESSES, PULONG);
HMODULE iphlpapi = GetModuleHandle("iphlpapi");
fpGetAdaptersAddresses = (void *)
(iphlpapi ?
GetProcAddress(iphlpapi, "GetAdaptersAddresses") :
NULL);
if (fpGetAdaptersAddresses) {
ip_adaddrs_p = ALLOC(ip_adaddrs_size);
for (i = 17; i; i--) {
ret = fpGetAdaptersAddresses(
family, flags, NULL, ip_adaddrs_p, &ip_adaddrs_size);
ip_adaddrs_p = REALLOC(ip_adaddrs_p, ip_adaddrs_size);
if (ret == NO_ERROR) break;
if (ret == ERROR_BUFFER_OVERFLOW) continue;
i = 0;
}
if (! i) {
FREE(ip_adaddrs_p);
ip_adaddrs_p = NULL;
}
} else ip_adaddrs_p = NULL;
}
{
/* Load the IP_INTERFACE_INFO table (only IPv4 interfaces),
* reliable source of interface names on XP
*/
unsigned long info_size = 4 * 1024;
info_p = ALLOC(info_size);
for (i = 17; i; i--) {
ret = GetInterfaceInfo(info_p, &info_size);
info_p = REALLOC(info_p, info_size);
if (ret == NO_ERROR) break;
if (ret == ERROR_INSUFFICIENT_BUFFER) continue;
i = 0;
}
if (! i) {
FREE(info_p);
info_p = NULL;
}
}
if (! ip_adaddrs_p) {
/* If GetAdaptersAddresses gave nothing we fall back to
* MIB_IPADDRTABLE (only IPv4 interfaces)
*/
unsigned long ip_addrs_size = 16 * sizeof(*ip_addrs_p);
ip_addrs_p = ALLOC(ip_addrs_size);
for (i = 17; i; i--) {
ret = GetIpAddrTable(ip_addrs_p, &ip_addrs_size, FALSE);
ip_addrs_p = REALLOC(ip_addrs_p, ip_addrs_size);
if (ret == NO_ERROR) break;
if (ret == ERROR_INSUFFICIENT_BUFFER) continue;
i = 0;
}
if (! i) {
if (info_p) FREE(info_p);
FREE(ip_addrs_p);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf_pp, rsize);
}
} else ip_addrs_p = NULL;
buf_p = buf_alloc_p = ALLOC(buf_size);
*buf_p++ = INET_REP_OK;
/* Iterate over MIB_IPADDRTABLE or IP_ADAPTER_ADDRESSES */
for (ia_p = NULL, ip_addrs_p ? ((void *)(i = 0)) : (ia_p = ip_adaddrs_p);
ip_addrs_p ? (i < ip_addrs_p->dwNumEntries) : (ia_p != NULL);
ip_addrs_p ? ((void *)(i++)) : (ia_p = ia_p->Next)) {
MIB_IPADDRROW *ipaddrrow_p = NULL;
DWORD flags = INET_IFF_MULTICAST;
DWORD index = 0;
WCHAR *wname_p = NULL;
MIB_IFROW ifrow;
if (ip_addrs_p) {
ipaddrrow_p = ip_addrs_p->table + i;
index = ipaddrrow_p->dwIndex;
} else {
index = ia_p->IfIndex;
if (ia_p->Flags & IP_ADAPTER_NO_MULTICAST) {
flags &= ~INET_IFF_MULTICAST;
}
}
index:
if (! index) goto done;
sys_memzero(&ifrow, sizeof(ifrow));
ifrow.dwIndex = index;
if (GetIfEntry(&ifrow) != NO_ERROR) break;
/* Find the interface name - first try MIB_IFROW.wzname */
if (ifrow.wszName[0] != 0) {
wname_p = ifrow.wszName;
} else {
/* Then try IP_ADAPTER_INDEX_MAP.Name (only IPv4 adapters) */
int j;
for (j = 0; j < info_p->NumAdapters; j++) {
if (info_p->Adapter[j].Index == (ULONG) ifrow.dwIndex) {
if (info_p->Adapter[j].Name[0] != 0) {
wname_p = info_p->Adapter[j].Name;
}
break;
}
}
}
if (wname_p) {
int len;
/* Convert interface name to UTF-8 */
len =
WideCharToMultiByte(
CP_UTF8, 0, wname_p, -1, NULL, 0, NULL, NULL);
if (! len) break;
BUF_ENSURE(len);
WideCharToMultiByte(
CP_UTF8, 0, wname_p, -1, buf_p, len, NULL, NULL);
buf_p += len;
} else {
/* Found no name -
* use "MIB_IFROW.dwIndex: MIB_IFROW.bDescr" as name instead */
int l;
l = utf8_len(ifrow.bDescr, ifrow.dwDescrLen);
BUF_ENSURE(9 + l+1);
buf_p +=
erts_sprintf(
buf_p, "%lu: ", (unsigned long) ifrow.dwIndex);
utf8_encode(ifrow.bDescr, ifrow.dwDescrLen, buf_p);
buf_p += l;
*buf_p++ = '\0';
}
/* Interface flags, often make up broadcast and multicast flags */
switch (ifrow.dwType) {
case IF_TYPE_ETHERNET_CSMACD:
flags |= INET_IFF_BROADCAST;
break;
case IF_TYPE_SOFTWARE_LOOPBACK:
flags |= INET_IFF_LOOPBACK;
flags &= ~INET_IFF_MULTICAST;
break;
default:
flags &= ~INET_IFF_MULTICAST;
break;
}
if (ifrow.dwAdminStatus) {
flags |= INET_IFF_UP;
switch (ifrow.dwOperStatus) {
case IF_OPER_STATUS_CONNECTING:
flags |= INET_IFF_POINTTOPOINT;
break;
case IF_OPER_STATUS_CONNECTED:
flags |= INET_IFF_RUNNING | INET_IFF_POINTTOPOINT;
break;
case IF_OPER_STATUS_OPERATIONAL:
flags |= INET_IFF_RUNNING;
break;
}
}
BUF_ENSURE(1 + 4);
*buf_p++ = INET_IFOPT_FLAGS;
put_int32(flags, buf_p); buf_p += 4;
if (ipaddrrow_p) {
/* Legacy implementation through GetIpAddrTable */
struct sockaddr_in sin;
/* IP Address */
sys_memzero(&sin, sizeof(sin));
sin.sin_family = AF_INET;
sin.sin_addr.s_addr = ipaddrrow_p->dwAddr;
BUF_ENSURE(1);
/* Netmask */
SOCKADDR_TO_BUF(INET_IFOPT_ADDR, (struct sockaddr *) &sin);
sin.sin_addr.s_addr = ipaddrrow_p->dwMask;
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_NETMASK, (struct sockaddr *) &sin);
if (flags & INET_IFF_BROADCAST) {
/* Broadcast address - fake it*/
sin.sin_addr.s_addr = ipaddrrow_p->dwAddr;
sin.sin_addr.s_addr |= ~ipaddrrow_p->dwMask;
BUF_ENSURE(1);
SOCKADDR_TO_BUF(
INET_IFOPT_BROADADDR, (struct sockaddr *) &sin);
}
} else {
IP_ADAPTER_UNICAST_ADDRESS *p;
/* IP Address(es) */
for (p = ia_p->FirstUnicastAddress;
p;
p = p->Next)
{
IP_ADAPTER_PREFIX *q;
ULONG shortest_length;
struct sockaddr *shortest_p, *sa_p = p->Address.lpSockaddr;
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_ADDR, sa_p);
shortest_p = NULL;
shortest_length = 0;
for (q = ia_p->FirstPrefix;
q;
q = q->Next) {
struct sockaddr *sp_p = q->Address.lpSockaddr;
if (sa_p->sa_family != sp_p->sa_family) continue;
switch (sa_p->sa_family) {
case AF_INET: {
struct sockaddr_in sin;
DWORD sa, sp, mask;
sa = ntohl((DWORD)
((struct sockaddr_in *)
sa_p)->sin_addr.s_addr);
sp = ntohl((DWORD)
((struct sockaddr_in *)
sp_p)->sin_addr.s_addr);
mask = 0xFFFFFFFF << (32 - q->PrefixLength);
if ((sa & mask) != (sp & mask)) continue;
if ((! shortest_p)
|| q->PrefixLength < shortest_length) {
shortest_p = sp_p;
shortest_length = q->PrefixLength;
}
} break;
case AF_INET6: {
struct sockaddr_in6 sin6;
if (!eq_masked_bytes((char *)
&((struct sockaddr_in6 *)
sa_p)->sin6_addr,
(char *)
&((struct sockaddr_in6 *)
sp_p)->sin6_addr,
q->PrefixLength)) {
continue;
}
if ((! shortest_p)
|| q->PrefixLength < shortest_length) {
shortest_p = sp_p;
shortest_length = q->PrefixLength;
}
} break;
}
}
if (! shortest_p) {
/* Found no shortest prefix */
shortest_p = sa_p;
switch (shortest_p->sa_family) {
case AF_INET: {
/* Fall back to old classfull network addresses */
DWORD addr = ntohl(((struct sockaddr_in *)shortest_p)
->sin_addr.s_addr);
if (! (addr & 0x800000)) {
/* Class A */
shortest_length = 8;
} else if (! (addr & 0x400000)) {
/* Class B */
shortest_length = 16;
} else if (! (addr & 0x200000)) {
/* Class C */
shortest_length = 24;
} else {
shortest_length = 32;
}
} break;
case AF_INET6: {
/* Just play it safe */
shortest_length = 128;
} break;
}
}
switch (shortest_p->sa_family) {
case AF_INET: {
struct sockaddr_in sin;
DWORD mask = 0xFFFFFFFF << (32 - shortest_length);
sys_memzero(&sin, sizeof(sin));
sin.sin_family = shortest_p->sa_family;
sin.sin_addr.s_addr = htonl(mask);
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_NETMASK,
(struct sockaddr *) &sin);
if (flags & INET_IFF_BROADCAST) {
DWORD sp =
ntohl((DWORD)
((struct sockaddr_in *)shortest_p)
-> sin_addr.s_addr);
sin.sin_addr.s_addr = htonl(sp | ~mask);
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_BROADADDR,
(struct sockaddr *) &sin);
}
} break;
case AF_INET6: {
struct sockaddr_in6 sin6;
sys_memzero(&sin6, sizeof(sin6));
sin6.sin6_family = shortest_p->sa_family;
set_netmask_bytes((char *) &sin6.sin6_addr,
16,
shortest_length);
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_NETMASK,
(struct sockaddr *) &sin6);
} break;
}
}
}
if (ifrow.dwPhysAddrLen) {
/* Hardware Address */
BUF_ENSURE(1 + 2 + ifrow.dwPhysAddrLen);
*buf_p++ = INET_IFOPT_HWADDR;
put_int16(ifrow.dwPhysAddrLen, buf_p); buf_p += 2;
sys_memcpy(buf_p, ifrow.bPhysAddr, ifrow.dwPhysAddrLen);
buf_p += ifrow.dwPhysAddrLen;
}
done:
/* That is all for this interface */
BUF_ENSURE(1);
*buf_p++ = '\0';
if (ia_p &&
ia_p->Ipv6IfIndex &&
ia_p->Ipv6IfIndex != index)
{
/* Oops, there was another interface for IPv6. Possible? XXX */
index = ia_p->Ipv6IfIndex;
goto index;
}
}
if (ip_adaddrs_p) FREE(ip_adaddrs_p);
if (info_p) FREE(info_p);
if (ip_addrs_p) FREE(ip_addrs_p);
buf_size = buf_p - buf_alloc_p;
buf_alloc_p = REALLOC(buf_alloc_p, buf_size);
/* buf_p is now unreliable */
*rbuf_pp = buf_alloc_p;
return buf_size;
# undef BUF_ENSURE
}
#elif defined(HAVE_GETIFADDRS)
#ifdef DEBUG
#define GETIFADDRS_BUFSZ (1)
#else
#define GETIFADDRS_BUFSZ (512)
#endif
static ErlDrvSSizeT inet_ctl_getifaddrs(inet_descriptor* desc_p,
char **rbuf_pp, ErlDrvSizeT rsize)
{
struct ifaddrs *ifa_p, *ifa_free_p;
ErlDrvSizeT buf_size;
char *buf_p;
char *buf_alloc_p;
int save_errno;
buf_size = GETIFADDRS_BUFSZ;
buf_alloc_p = ALLOC(GETIFADDRS_BUFSZ);
buf_p = buf_alloc_p;
# define BUF_ENSURE(Size) \
do { \
int NEED_, GOT_ = buf_p - buf_alloc_p; \
NEED_ = GOT_ + (Size); \
if (NEED_ > buf_size) { \
buf_size = NEED_ + GETIFADDRS_BUFSZ; \
buf_alloc_p = REALLOC(buf_alloc_p, buf_size); \
buf_p = buf_alloc_p + GOT_; \
} \
} while (0)
# define SOCKADDR_TO_BUF(opt, sa) \
do { \
if (sa) { \
char *P_; \
*buf_p++ = (opt); \
while (! (P_ = sockaddr_to_buf((sa), buf_p, \
buf_alloc_p+buf_size))) { \
int GOT_ = buf_p - buf_alloc_p; \
buf_size += GETIFADDRS_BUFSZ; \
buf_alloc_p = REALLOC(buf_alloc_p, buf_size); \
buf_p = buf_alloc_p + GOT_; \
} \
if (P_ == buf_p) { \
buf_p--; \
} else { \
buf_p = P_; \
} \
} \
} while (0)
if ((save_errno = call_getifaddrs(desc_p, &ifa_p)) != 0)
return ctl_error(save_errno, rbuf_pp, rsize);
ifa_free_p = ifa_p;
*buf_p++ = INET_REP_OK;
for (; ifa_p; ifa_p = ifa_p->ifa_next) {
int len = utf8_len(ifa_p->ifa_name, -1);
BUF_ENSURE(len+1 + 1+4 + 1);
utf8_encode(ifa_p->ifa_name, -1, buf_p);
buf_p += len;
*buf_p++ = '\0';
*buf_p++ = INET_IFOPT_FLAGS;
put_int32(IFGET_FLAGS(ifa_p->ifa_flags), buf_p); buf_p += 4;
if (ifa_p->ifa_addr) {
if (ifa_p->ifa_addr->sa_family == AF_INET
#if defined(AF_INET6)
|| ifa_p->ifa_addr->sa_family == AF_INET6
#endif
) {
SOCKADDR_TO_BUF(INET_IFOPT_ADDR, ifa_p->ifa_addr);
if (ifa_p->ifa_netmask) {
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_NETMASK, ifa_p->ifa_netmask);
}
if (ifa_p->ifa_dstaddr &&
(ifa_p->ifa_flags & IFF_POINTOPOINT)) {
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_DSTADDR, ifa_p->ifa_dstaddr);
} else if (ifa_p->ifa_broadaddr &&
(ifa_p->ifa_flags & IFF_BROADCAST)) {
BUF_ENSURE(1);
SOCKADDR_TO_BUF(INET_IFOPT_BROADADDR, ifa_p->ifa_broadaddr);
}
}
#if defined(AF_LINK) || defined(AF_PACKET)
else if (
#if defined(AF_LINK)
ifa_p->ifa_addr->sa_family == AF_LINK
#else
0
#endif
#if defined(AF_PACKET)
|| ifa_p->ifa_addr->sa_family == AF_PACKET
#endif
) {
size_t need = sockaddr_bufsz_need(ifa_p->ifa_addr);
if (need > 3) {
BUF_ENSURE(1 + need);
SOCKADDR_TO_BUF(INET_IFOPT_HWADDR, ifa_p->ifa_addr);
}
}
#endif
}
BUF_ENSURE(1);
*buf_p++ = '\0';
}
buf_size = buf_p - buf_alloc_p;
buf_alloc_p = REALLOC(buf_alloc_p, buf_size);
/* buf_p is now unreliable */
freeifaddrs(ifa_free_p);
*rbuf_pp = buf_alloc_p;
return buf_size;
# undef BUF_ENSURE
}
#undef GETIFADDRS_BUFSZ
#else
static ErlDrvSSizeT inet_ctl_getifaddrs(inet_descriptor* desc_p,
char **rbuf_pp, ErlDrvSizeT rsize)
{
return ctl_error(ENOTSUP, rbuf_pp, rsize);
}
#endif
/* Per H @ Tail-f: The original code here had problems that possibly
only occur if you abuse it for non-INET sockets, but anyway:
a) If the getsockopt for SO_PRIORITY or IP_TOS failed, the actual
requested setsockopt was never even attempted.
b) If {get,set}sockopt for one of IP_TOS and SO_PRIORITY failed,
but ditto for the other worked and that was actually the requested
option, failure was still reported to erlang. */
#if defined(IP_TOS) && defined(IPPROTO_IP) \
&& defined(SO_PRIORITY) && !defined(__WIN32__)
static int setopt_prio_tos_trick
(int fd, int proto, int type, char* arg_ptr, int arg_sz, int propagate)
{
/* The relations between SO_PRIORITY, TOS and other options
is not what you (or at least I) would expect...:
If TOS is set after priority, priority is zeroed.
If any other option is set after tos, tos might be zeroed.
Therefore, save tos and priority. If something else is set,
restore both after setting, if tos is set, restore only
prio and if prio is set restore none... All to keep the
user feeling socket options are independent. /PaN */
int tmp_ival_prio;
int tmp_ival_tos;
int res;
int res_prio;
int res_tos;
SOCKLEN_T tmp_arg_sz_prio = sizeof(tmp_ival_prio);
SOCKLEN_T tmp_arg_sz_tos = sizeof(tmp_ival_tos);
res_prio = sock_getopt(fd, SOL_SOCKET, SO_PRIORITY,
(char *) &tmp_ival_prio, &tmp_arg_sz_prio);
res_tos = sock_getopt(fd, IPPROTO_IP, IP_TOS,
(char *) &tmp_ival_tos, &tmp_arg_sz_tos);
res = sock_setopt(fd, proto, type, arg_ptr, arg_sz);
if (res == 0) {
if (type != SO_PRIORITY) {
if (type != IP_TOS && res_tos == 0) {
res_tos = sock_setopt(fd,
IPPROTO_IP,
IP_TOS,
(char *) &tmp_ival_tos,
tmp_arg_sz_tos);
if (propagate)
res = res_tos;
}
if (res == 0 && res_prio == 0) {
res_prio = sock_setopt(fd,
SOL_SOCKET,
SO_PRIORITY,
(char *) &tmp_ival_prio,
tmp_arg_sz_prio);
if (propagate) {
/* Some kernels set a SO_PRIORITY by default that you are not permitted to reset,
silently ignore this error condition */
if (res_prio != 0 && sock_errno() == EPERM) {
res = 0;
} else {
res = res_prio;
}
}
}
}
}
return (res);
}
#endif
/* set socket options:
** return -1 on error
** 0 if ok
** 1 if ok force deliver of queued data
*/
#ifdef HAVE_SCTP
static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len);
#endif
static int inet_set_opts(inet_descriptor* desc, char* ptr, int len)
{
int type;
int proto;
int opt;
struct linger li_val;
#if defined(HAVE_MULTICAST_SUPPORT) && defined(IPPROTO_IP)
struct ip_mreq mreq_val;
#endif
int ival;
char* arg_ptr;
int arg_sz;
#ifdef SO_BINDTODEVICE
char ifname[IFNAMSIZ];
#endif
enum PacketParseType old_htype = desc->htype;
int old_active = desc->active;
int propagate; /* Set to 1 if failure to set this option
should be propagated to erlang (not all
errors can be propagated for BC reasons) */
int res;
#ifdef HAVE_SCTP
/* SCTP sockets are treated completely separately: */
if (IS_SCTP(desc))
return sctp_set_opts(desc, ptr, len);
#endif
/* XXX { int i; for(i=0;i<len;++i) fprintf(stderr,"0x%02X, ", (unsigned) ptr[i]); fprintf(stderr,"\r\n");} */
while(len >= 5) {
int recv_cmsgflags;
opt = *ptr++;
ival = get_int32(ptr);
ptr += 4;
len -= 5;
arg_ptr = (char*) &ival;
arg_sz = sizeof(ival);
proto = SOL_SOCKET;
propagate = 0;
recv_cmsgflags = desc->recv_cmsgflags;
switch(opt) {
case INET_LOPT_HEADER:
DEBUGF(("inet_set_opts(%ld): s=%d, HEADER=%d\r\n",
(long)desc->port, desc->s,ival));
desc->hsz = ival;
continue;
case INET_LOPT_MODE:
/* List or Binary: */
DEBUGF(("inet_set_opts(%ld): s=%d, MODE=%d\r\n",
(long)desc->port, desc->s, ival));
desc->mode = ival;
continue;
case INET_LOPT_DELIVER:
DEBUGF(("inet_set_opts(%ld): s=%d, DELIVER=%d\r\n",
(long)desc->port, desc->s, ival));
desc->deliver = ival;
continue;
case INET_LOPT_BUFFER:
DEBUGF(("inet_set_opts(%ld): s=%d, BUFFER=%d\r\n",
(long)desc->port, desc->s, ival));
if (ival < INET_MIN_BUFFER) ival = INET_MIN_BUFFER;
desc->bufsz = ival;
continue;
case INET_LOPT_ACTIVE:
DEBUGF(("inet_set_opts(%ld): s=%d, ACTIVE=%d\r\n",
(long)desc->port, desc->s, ival));
desc->active = ival;
if (desc->active == INET_MULTI) {
long ac = desc->active_count;
Sint16 nval = get_int16(ptr);
ptr += 2;
len -= 2;
ac += nval;
if (ac > INT16_MAX || ac < INT16_MIN)
return -1;
desc->active_count += nval;
if (desc->active_count < 0)
desc->active_count = 0;
if (desc->active_count == 0) {
desc->active = INET_PASSIVE;
packet_passive_message(desc);
}
} else
desc->active_count = 0;
if ((desc->stype == SOCK_STREAM) && (desc->active != INET_PASSIVE) &&
(desc->state == INET_STATE_CLOSED)) {
tcp_descriptor *tdesc = (tcp_descriptor *) desc;
if (tdesc->tcp_add_flags & TCP_ADDF_DELAYED_ECONNRESET) {
tdesc->tcp_add_flags &= ~TCP_ADDF_DELAYED_ECONNRESET;
tcp_error_message(tdesc, ECONNRESET);
}
tcp_closed_message(tdesc);
if (desc->exitf) {
driver_exit(desc->port, 0);
return 0; /* Give up on this socket, descriptor lost */
} else {
desc_close_read(desc);
}
}
continue;
case INET_LOPT_PACKET:
DEBUGF(("inet_set_opts(%ld): s=%d, PACKET=%d\r\n",
(long)desc->port, desc->s, ival));
desc->htype = ival;
continue;
case INET_LOPT_PACKET_SIZE:
DEBUGF(("inet_set_opts(%ld): s=%d, PACKET_SIZE=%d\r\n",
(long)desc->port, desc->s, ival));
desc->psize = (unsigned int)ival;
continue;
case INET_LOPT_EXITONCLOSE:
DEBUGF(("inet_set_opts(%ld): s=%d, EXITONCLOSE=%d\r\n",
(long)desc->port, desc->s, ival));
desc->exitf = ival;
continue;
case INET_LOPT_TCP_HIWTRMRK:
if (desc->stype == SOCK_STREAM) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
if (ival < 0) ival = 0;
if (tdesc->low > ival)
tdesc->low = ival;
tdesc->high = ival;
}
continue;
case INET_LOPT_TCP_LOWTRMRK:
if (desc->stype == SOCK_STREAM) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
if (ival < 0) ival = 0;
if (tdesc->high < ival)
tdesc->high = ival;
tdesc->low = ival;
}
continue;
case INET_LOPT_MSGQ_HIWTRMRK: {
ErlDrvSizeT high;
if (ival < ERL_DRV_BUSY_MSGQ_LIM_MIN
|| ERL_DRV_BUSY_MSGQ_LIM_MAX < ival)
return -1;
high = (ErlDrvSizeT) ival;
erl_drv_busy_msgq_limits(desc->port, NULL, &high);
continue;
}
case INET_LOPT_MSGQ_LOWTRMRK: {
ErlDrvSizeT low;
if (ival < ERL_DRV_BUSY_MSGQ_LIM_MIN
|| ERL_DRV_BUSY_MSGQ_LIM_MAX < ival)
return -1;
low = (ErlDrvSizeT) ival;
erl_drv_busy_msgq_limits(desc->port, &low, NULL);
continue;
}
case INET_LOPT_TCP_SEND_TIMEOUT:
if (desc->stype == SOCK_STREAM) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
tdesc->send_timeout = ival;
}
continue;
case INET_LOPT_TCP_SEND_TIMEOUT_CLOSE:
if (desc->stype == SOCK_STREAM) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
tdesc->send_timeout_close = ival;
}
continue;
case INET_LOPT_TCP_DELAY_SEND:
if (desc->stype == SOCK_STREAM) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
if (ival)
tdesc->tcp_add_flags |= TCP_ADDF_DELAY_SEND;
else
tdesc->tcp_add_flags &= ~TCP_ADDF_DELAY_SEND;
}
continue;
#ifdef HAVE_UDP
case INET_LOPT_UDP_READ_PACKETS:
if (desc->stype == SOCK_DGRAM) {
udp_descriptor* udesc = (udp_descriptor*) desc;
if (ival <= 0) return -1;
udesc->read_packets = ival;
}
continue;
#endif
#ifdef HAVE_SETNS
case INET_LOPT_NETNS:
/* It is annoying that ival and len are both (signed) int */
if (ival < 0) return -1;
if (len < ival) return -1;
if (desc->netns != NULL) FREE(desc->netns);
desc->netns = ALLOC(((unsigned int) ival) + 1);
memcpy(desc->netns, ptr, ival);
desc->netns[ival] = '\0';
ptr += ival;
len -= ival;
continue;
#endif
case INET_LOPT_TCP_SHOW_ECONNRESET:
if (desc->sprotocol == IPPROTO_TCP) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
if (ival)
tdesc->tcp_add_flags |= TCP_ADDF_SHOW_ECONNRESET;
else
tdesc->tcp_add_flags &= ~TCP_ADDF_SHOW_ECONNRESET;
}
continue;
case INET_LOPT_LINE_DELIM:
DEBUGF(("inet_set_opts(%ld): s=%d, LINE_DELIM=%d\r\n",
(long)desc->port, desc->s, ival));
desc->delimiter = (char)ival;
continue;
case INET_OPT_REUSEADDR:
#ifdef __WIN32__
continue; /* Bjorn says */
#else
type = SO_REUSEADDR;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_REUSEADDR=%d\r\n",
(long)desc->port, desc->s,ival));
break;
#endif
case INET_OPT_KEEPALIVE: type = SO_KEEPALIVE;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_KEEPALIVE=%d\r\n",
(long)desc->port, desc->s, ival));
break;
case INET_OPT_DONTROUTE: type = SO_DONTROUTE;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_DONTROUTE=%d\r\n",
(long)desc->port, desc->s, ival));
break;
case INET_OPT_BROADCAST: type = SO_BROADCAST;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_BROADCAST=%d\r\n",
(long)desc->port, desc->s,ival));
break;
case INET_OPT_OOBINLINE: type = SO_OOBINLINE;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_OOBINLINE=%d\r\n",
(long)desc->port, desc->s, ival));
break;
case INET_OPT_SNDBUF: type = SO_SNDBUF;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_SNDBUF=%d\r\n",
(long)desc->port, desc->s, ival));
break;
case INET_OPT_RCVBUF: type = SO_RCVBUF;
DEBUGF(("inet_set_opts(%ld): s=%d, SO_RCVBUF=%d\r\n",
(long)desc->port, desc->s, ival));
break;
case INET_OPT_LINGER: type = SO_LINGER;
if (len < 4)
return -1;
li_val.l_onoff = ival;
li_val.l_linger = get_int32(ptr);
ptr += 4;
len -= 4;
arg_ptr = (char*) &li_val;
arg_sz = sizeof(li_val);
DEBUGF(("inet_set_opts(%ld): s=%d, SO_LINGER=%d,%d",
(long)desc->port, desc->s, li_val.l_onoff,li_val.l_linger));
if (desc->sprotocol == IPPROTO_TCP) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
if (li_val.l_onoff && li_val.l_linger == 0)
tdesc->tcp_add_flags |= TCP_ADDF_LINGER_ZERO;
else
tdesc->tcp_add_flags &= ~TCP_ADDF_LINGER_ZERO;
}
break;
case INET_OPT_PRIORITY:
#ifdef SO_PRIORITY
type = SO_PRIORITY;
propagate = 1; /* We do want to know if this fails */
DEBUGF(("inet_set_opts(%ld): s=%d, SO_PRIORITY=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#else
/* inet_fill_opts always returns a value for this option,
* so we need to ignore it if not implemented */
continue;
#endif
case INET_OPT_TOS:
#if defined(IP_TOS) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_TOS;
propagate = 1;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_TOS=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#else
/* inet_fill_opts always returns a value for this option,
* so we need to ignore it if not implemented. */
continue;
#endif
#if defined(IPV6_TCLASS) && defined(IPPROTO_IPV6)
case INET_OPT_TCLASS:
proto = IPPROTO_IPV6;
type = IPV6_TCLASS;
propagate = 1;
DEBUGF(("inet_set_opts(%ld): s=%d, IPV6_TCLASS=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#endif
#if defined(IP_TTL) && defined(IPPROTO_IP)
case INET_OPT_TTL:
proto = IPPROTO_IP;
type = IP_TTL;
propagate = 1;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_TTL=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#endif
#if defined(IP_RECVTOS) && defined(IPPROTO_IP)
case INET_OPT_RECVTOS:
proto = IPPROTO_IP;
type = IP_RECVTOS;
propagate = 1;
recv_cmsgflags =
ival ?
(desc->recv_cmsgflags | INET_CMSG_RECVTOS) :
(desc->recv_cmsgflags & ~INET_CMSG_RECVTOS);
DEBUGF(("inet_set_opts(%ld): s=%d, IP_RECVTOS=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#endif
#if defined(IPV6_RECVTCLASS) && defined(IPPROTO_IPV6)
case INET_OPT_RECVTCLASS:
proto = IPPROTO_IPV6;
type = IPV6_RECVTCLASS;
propagate = 1;
recv_cmsgflags =
ival ?
(desc->recv_cmsgflags | INET_CMSG_RECVTCLASS) :
(desc->recv_cmsgflags & ~INET_CMSG_RECVTCLASS);
DEBUGF(("inet_set_opts(%ld): s=%d, IPV6_RECVTCLASS=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#endif
#if defined(IP_RECVTTL) && defined(IPPROTO_IP)
case INET_OPT_RECVTTL:
proto = IPPROTO_IP;
type = IP_RECVTTL;
propagate = 1;
recv_cmsgflags =
ival ?
(desc->recv_cmsgflags | INET_CMSG_RECVTTL) :
(desc->recv_cmsgflags & ~INET_CMSG_RECVTTL);
DEBUGF(("inet_set_opts(%ld): s=%d, IP_RECVTTL=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#endif
case TCP_OPT_NODELAY:
proto = IPPROTO_TCP;
type = TCP_NODELAY;
DEBUGF(("inet_set_opts(%ld): s=%d, TCP_NODELAY=%d\r\n",
(long)desc->port, desc->s, ival));
break;
case TCP_OPT_NOPUSH:
#if defined(INET_TCP_NOPUSH)
proto = IPPROTO_TCP;
type = INET_TCP_NOPUSH;
DEBUGF(("inet_set_opts(%ld): s=%d, t=%d TCP_NOPUSH=%d\r\n",
(long)desc->port, desc->s, type, ival));
break;
#else
/* inet_fill_opts always returns a value for this option,
* so we need to ignore it if not implemented, just in case */
continue;
#endif
#if defined(HAVE_MULTICAST_SUPPORT) && defined(IPPROTO_IP)
case UDP_OPT_MULTICAST_TTL:
proto = IPPROTO_IP;
type = IP_MULTICAST_TTL;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_MULTICAST_TTL=%d\r\n",
(long)desc->port,desc->s,ival));
break;
case UDP_OPT_MULTICAST_LOOP:
proto = IPPROTO_IP;
type = IP_MULTICAST_LOOP;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_MULTICAST_LOOP=%d\r\n",
(long)desc->port,desc->s,ival));
break;
case UDP_OPT_MULTICAST_IF:
proto = IPPROTO_IP;
type = IP_MULTICAST_IF;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_MULTICAST_IF=%x\r\n",
(long)desc->port, desc->s, ival));
ival = sock_htonl(ival);
break;
case UDP_OPT_ADD_MEMBERSHIP:
proto = IPPROTO_IP;
type = IP_ADD_MEMBERSHIP;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_ADD_MEMBERSHIP=%d\r\n",
(long)desc->port, desc->s,ival));
goto L_set_mreq;
case UDP_OPT_DROP_MEMBERSHIP:
proto = IPPROTO_IP;
type = IP_DROP_MEMBERSHIP;
DEBUGF(("inet_set_opts(%ld): s=%d, IP_DROP_MEMBERSHIP=%x\r\n",
(long)desc->port, desc->s, ival));
L_set_mreq:
mreq_val.imr_multiaddr.s_addr = sock_htonl(ival);
ival = get_int32(ptr);
mreq_val.imr_interface.s_addr = sock_htonl(ival);
ptr += 4;
len -= 4;
arg_ptr = (char*)&mreq_val;
arg_sz = sizeof(mreq_val);
break;
#endif /* defined(HAVE_MULTICAST_SUPPORT) && defined(IPPROTO_IP) */
case INET_OPT_IPV6_V6ONLY:
#if HAVE_DECL_IPV6_V6ONLY && defined(IPPROTO_IPV6)
proto = IPPROTO_IPV6;
type = IPV6_V6ONLY;
propagate = 1;
DEBUGF(("inet_set_opts(%ld): s=%d, IPV6_V6ONLY=%d\r\n",
(long)desc->port, desc->s, ival));
break;
#elif defined(__WIN32__) && defined(HAVE_IN6) && defined(AF_INET6)
/* Fake a'la OpenBSD; set to 'true' is fine but 'false' invalid. */
if (ival != 0) continue;
else return -1;
break;
#else
continue;
#endif
case INET_OPT_RAW:
if (len < 8) {
return -1;
}
proto = ival;
type = get_int32(ptr);
ptr += 4;
arg_sz = get_int32(ptr);
ptr += 4;
len -= 8;
if (len < arg_sz) {
return -1;
}
arg_ptr = ptr;
ptr += arg_sz;
len -= arg_sz;
break;
#ifdef SO_BINDTODEVICE
case INET_OPT_BIND_TO_DEVICE:
if (ival < 0) return -1;
if (len < ival) return -1;
if (ival > sizeof(ifname)) {
return -1;
}
memcpy(ifname, ptr, ival);
ifname[ival] = '\0';
ptr += ival;
len -= ival;
proto = SOL_SOCKET;
type = SO_BINDTODEVICE;
arg_ptr = (char*)&ifname;
arg_sz = sizeof(ifname);
propagate = 1; /* We do want to know if this fails */
DEBUGF(("inet_set_opts(%ld): s=%d, SO_BINDTODEVICE=%s\r\n",
(long)desc->port, desc->s, ifname));
break;
#endif
default:
return -1;
}
#if defined(IP_TOS) && defined(IPPROTO_IP) \
&& defined(SO_PRIORITY) && !defined(__WIN32__)
res = setopt_prio_tos_trick (desc->s, proto, type, arg_ptr, arg_sz, propagate);
#else
res = sock_setopt (desc->s, proto, type, arg_ptr, arg_sz);
#endif
if (res == 0) desc->recv_cmsgflags = recv_cmsgflags;
if (propagate && res != 0) {
return -1;
}
DEBUGF(("inet_set_opts(%ld): s=%d returned %d\r\n",
(long)desc->port, desc->s, res));
if (type == SO_RCVBUF) {
/* make sure we have desc->bufsz >= SO_RCVBUF */
if (ival > (1 << 16) && desc->stype == SOCK_DGRAM && !IS_SCTP(desc))
/* For UDP we don't want to automatically
set the buffer size to be larger than
the theoretical max MTU */
desc->bufsz = 1 << 16;
else if (ival > desc->bufsz)
desc->bufsz = ival;
}
}
if ( ((desc->stype == SOCK_STREAM) && IS_CONNECTED(desc)) ||
((desc->stype == SOCK_DGRAM) && IS_OPEN(desc))) {
if (desc->active != old_active)
sock_select(desc, (FD_READ|FD_CLOSE), (desc->active>0));
/* XXX: UDP sockets could also trigger immediate read here NIY */
if ((desc->stype==SOCK_STREAM) && desc->active) {
if (!old_active || (desc->htype != old_htype)) {
/* passive => active change OR header type change in active mode */
/* Return > 1 if only active changed to INET_ONCE -> direct read if
header type is unchanged. */
/* XXX fprintf(stderr,"desc->htype == %d, old_htype == %d,
desc->active == %d, old_active == %d\r\n",(int)desc->htype,
(int) old_htype, (int) desc->active, (int) old_active );*/
return 1+(desc->htype == old_htype &&
(desc->active == INET_ONCE || desc->active == INET_MULTI));
}
return 0;
}
}
return 0;
}
#ifdef HAVE_SCTP
/* "sctp_get_initmsg":
** Used by both "send*" and "setsockopt". Gets the 4 fields of "sctp_initmsg"
** from the input buffer:
*/
#define SCTP_GET_INITMSG_LEN (4*2)
static char* sctp_get_initmsg(struct sctp_initmsg* ini, char* curr)
{
ini->sinit_num_ostreams = get_int16 (curr); curr += 2;
ini->sinit_max_instreams = get_int16 (curr); curr += 2;
ini->sinit_max_attempts = get_int16 (curr); curr += 2;
ini->sinit_max_init_timeo = get_int16 (curr); curr += 2;
return curr;
}
/* "sctp_get_sendparams":
** Parses (from the command buffer) the 6 user-sprcified parms of
** "sctp_sndrcvinfo":
** stream(u16), flags(u16), ppid(u32), context(u32),
** timetoleave(u32), assoc_id
** Is used by both "send*" and "setsockopt":
*/
#define SCTP_GET_SENDPARAMS_LEN (2*2 + 3*4 + ASSOC_ID_LEN)
static char* sctp_get_sendparams (struct sctp_sndrcvinfo* sri, char* curr)
{
int eflags;
int cflags;
sri->sinfo_stream = get_int16(curr); curr += 2;
sri->sinfo_ssn = 0;
/* The "flags" are already ORed at the Erlang side, here we
reconstruct the real SCTP flags:
*/
eflags = get_int16(curr); curr += 2;
cflags = 0;
if (eflags & SCTP_FLAG_UNORDERED) cflags |= SCTP_UNORDERED;
if (eflags & SCTP_FLAG_ADDR_OVER) cflags |= SCTP_ADDR_OVER;
if (eflags & SCTP_FLAG_ABORT) cflags |= SCTP_ABORT;
if (eflags & SCTP_FLAG_EOF) cflags |= SCTP_EOF;
sri->sinfo_flags = cflags;
sri->sinfo_ppid = sock_htonl(get_int32(curr));
curr += 4;
sri->sinfo_context = get_int32(curr); curr += 4;
sri->sinfo_timetolive = get_int32(curr); curr += 4;
sri->sinfo_tsn = 0;
sri->sinfo_cumtsn = 0;
sri->sinfo_assoc_id = GET_ASSOC_ID (curr); curr += ASSOC_ID_LEN;
return curr;
}
/* Set SCTP options:
** return -1 on error
** 0 if ok
** NB: unlike inet_set_opts(), we don't have an active mode here, so there is no
** mode change which could force data delivery on setting an option.
** Arg: "ptr": [(erlang_encoded_opt(u8), value(...)), ...]; thus, multiple opts
** can be set at a time.
*/
static int sctp_set_opts(inet_descriptor* desc, char* ptr, int len)
{
# define CHKLEN(Ptr, Len) \
do { \
if ((Ptr) + (Len) > ptr + len) return -1; \
} while (0)
char * curr = ptr;
int proto, type, res;
/* The following union is used to hold any arg to "setsockopt": */
union opts_union
{
int ival;
struct sctp_rtoinfo rtoi;
struct sctp_assocparams ap;
struct sctp_initmsg im;
struct linger lin;
struct sctp_setpeerprim prim;
struct sctp_setadaptation ad;
struct sctp_paddrparams pap;
struct sctp_sndrcvinfo sri;
struct sctp_event_subscribe es;
# ifdef SCTP_DELAYED_ACK_TIME
struct sctp_assoc_value av; /* Not in SOLARIS10 */
# endif
# ifdef SO_BINDTODEVICE
char ifname[IFNAMSIZ];
# endif
}
arg;
char * arg_ptr = NULL;
int arg_sz = 0;
int old_active = desc->active;
while (curr < ptr + len)
{
int recv_cmsgflags;
/* Get the Erlang-encoded option type -- always 1 byte: */
int eopt;
eopt = *curr;
curr++;
recv_cmsgflags = desc->recv_cmsgflags;
/* Get the option value. XXX: The condition (curr < ptr + len)
does not preclude us from reading from beyond the buffer end,
if the Erlang part of the driver specifies its input wrongly!
*/
CHKLEN(curr, 4); /* All options need at least 4 bytes */
switch(eopt)
{
/* Local INET options: */
case INET_LOPT_BUFFER:
desc->bufsz = get_int32(curr); curr += 4;
if (desc->bufsz < INET_MIN_BUFFER)
desc->bufsz = INET_MIN_BUFFER;
res = 0; /* This does not affect the kernel buffer size */
continue;
case INET_LOPT_MODE:
desc->mode = get_int32(curr); curr += 4;
res = 0;
continue;
case INET_LOPT_ACTIVE:
desc->active = get_int32(curr); curr += 4;
if (desc->active == INET_MULTI) {
long ac = desc->active_count;
Sint16 nval = get_int16(curr); curr += 2;
ac += nval;
if (ac > INT16_MAX || ac < INT16_MIN)
return -1;
desc->active_count += nval;
if (desc->active_count < 0)
desc->active_count = 0;
if (desc->active_count == 0) {
desc->active = INET_PASSIVE;
packet_passive_message(desc);
}
} else
desc->active_count = 0;
res = 0;
continue;
#ifdef HAVE_SETNS
case INET_LOPT_NETNS:
{
size_t ns_len;
ns_len = get_int32(curr); curr += 4;
CHKLEN(curr, ns_len);
if (desc->netns != NULL) FREE(desc->netns);
desc->netns = ALLOC(ns_len + 1);
memcpy(desc->netns, curr, ns_len);
desc->netns[ns_len] = '\0';
curr += ns_len;
}
continue;
#endif
/* SCTP options and applicable generic INET options: */
case SCTP_OPT_RTOINFO:
{
CHKLEN(curr, ASSOC_ID_LEN + 3*4);
arg.rtoi.srto_assoc_id = GET_ASSOC_ID(curr); curr += ASSOC_ID_LEN;
arg.rtoi.srto_initial = get_int32 (curr); curr += 4;
arg.rtoi.srto_max = get_int32 (curr); curr += 4;
arg.rtoi.srto_min = get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_RTOINFO;
arg_ptr = (char*) (&arg.rtoi);
arg_sz = sizeof ( arg.rtoi);
break;
}
case SCTP_OPT_ASSOCINFO:
{
CHKLEN(curr, ASSOC_ID_LEN + 2*2 + 3*4);
arg.ap.sasoc_assoc_id = GET_ASSOC_ID(curr); curr += ASSOC_ID_LEN;
arg.ap.sasoc_asocmaxrxt = get_int16 (curr); curr += 2;
arg.ap.sasoc_number_peer_destinations =
get_int16 (curr); curr += 2;
arg.ap.sasoc_peer_rwnd = get_int32 (curr); curr += 4;
arg.ap.sasoc_local_rwnd = get_int32 (curr); curr += 4;
arg.ap.sasoc_cookie_life = get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_ASSOCINFO;
arg_ptr = (char*) (&arg.ap);
arg_sz = sizeof ( arg.ap);
break;
}
case SCTP_OPT_INITMSG:
{
CHKLEN(curr, SCTP_GET_INITMSG_LEN);
curr = sctp_get_initmsg (&arg.im, curr);
proto = IPPROTO_SCTP;
type = SCTP_INITMSG;
arg_ptr = (char*) (&arg.im);
arg_sz = sizeof ( arg.im);
break;
}
case INET_OPT_LINGER:
{
CHKLEN(curr, 2*4);
arg.lin.l_onoff = get_int32 (curr); curr += 4;
arg.lin.l_linger = get_int32 (curr); curr += 4;
proto = SOL_SOCKET;
type = SO_LINGER;
arg_ptr = (char*) (&arg.lin);
arg_sz = sizeof ( arg.lin);
break;
}
case SCTP_OPT_NODELAY:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_NODELAY;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case INET_OPT_RCVBUF:
{
arg.ival= get_int32 (curr); curr += 4;
proto = SOL_SOCKET;
type = SO_RCVBUF;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
/* Adjust the size of the user-level recv buffer, so it's not
smaller than the kernel one: */
if (desc->bufsz <= arg.ival)
desc->bufsz = arg.ival;
break;
}
case INET_OPT_SNDBUF:
{
arg.ival= get_int32 (curr); curr += 4;
proto = SOL_SOCKET;
type = SO_SNDBUF;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
/* Adjust the size of the user-level recv buffer, so it's not
smaller than the kernel one: */
if (desc->bufsz <= arg.ival)
desc->bufsz = arg.ival;
break;
}
case INET_OPT_REUSEADDR:
{
arg.ival= get_int32 (curr); curr += 4;
proto = SOL_SOCKET;
type = SO_REUSEADDR;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case INET_OPT_DONTROUTE:
{
arg.ival= get_int32 (curr); curr += 4;
proto = SOL_SOCKET;
type = SO_DONTROUTE;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case INET_OPT_PRIORITY:
# ifdef SO_PRIORITY
{
arg.ival= get_int32 (curr); curr += 4;
proto = SOL_SOCKET;
type = SO_PRIORITY;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
# else
/* inet_fill_opts always returns a value for this option,
* so we need to ignore it if not implemented, just in case */
continue;
# endif
case INET_OPT_TOS:
# if defined(IP_TOS) && defined(IPPROTO_IP)
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IP;
type = IP_TOS;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
# else
/* inet_fill_opts always returns a value for this option,
* so we need to ignore it if not implemented, just in case */
continue;
# endif
# if defined(IPV6_TCLASS) && defined(IPPROTO_IPV6)
case INET_OPT_TCLASS:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IPV6;
type = IPV6_TCLASS;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
# endif
# if defined(IP_TTL) && defined(IPPROTO_IP)
case INET_OPT_TTL:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IP;
type = IP_TTL;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
# endif
# if defined(IP_RECVTOS) && defined(IPPROTO_IP)
case INET_OPT_RECVTOS:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IP;
type = IP_RECVTOS;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
recv_cmsgflags =
arg.ival ?
(desc->recv_cmsgflags | INET_CMSG_RECVTOS) :
(desc->recv_cmsgflags & ~INET_CMSG_RECVTOS);
break;
}
# endif
# if defined(IPV6_RECVTCLASS) && defined(IPPROTO_IPV6)
case INET_OPT_RECVTCLASS:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IPV6;
type = IPV6_RECVTCLASS;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
recv_cmsgflags =
arg.ival ?
(desc->recv_cmsgflags | INET_CMSG_RECVTCLASS) :
(desc->recv_cmsgflags & ~INET_CMSG_RECVTCLASS);
break;
}
# endif
# if defined(IP_RECVTTL) && defined(IPPROTO_IP)
case INET_OPT_RECVTTL:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IP;
type = IP_RECVTTL;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
recv_cmsgflags =
arg.ival ?
(desc->recv_cmsgflags | INET_CMSG_RECVTTL) :
(desc->recv_cmsgflags & ~INET_CMSG_RECVTTL);
break;
}
# endif
case INET_OPT_IPV6_V6ONLY:
# if HAVE_DECL_IPV6_V6ONLY && defined(IPPROTO_IPV6)
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_IPV6;
type = IPV6_V6ONLY;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
# elif defined(__WIN32__) && defined(HAVE_IN6) && defined(AF_INET6)
# error Here is a fix for Win IPv6 SCTP missing
# else
continue; /* Option not supported -- ignore it */
# endif
#ifdef SO_BINDTODEVICE
case INET_OPT_BIND_TO_DEVICE:
arg_sz = get_int32(curr); curr += 4;
CHKLEN(curr, arg_sz);
if (arg_sz >= sizeof(arg.ifname))
return -1;
memcpy(arg.ifname, curr, arg_sz);
arg.ifname[arg_sz] = '\0';
curr += arg_sz;
proto = SOL_SOCKET;
type = SO_BINDTODEVICE;
arg_ptr = (char*) (&arg.ifname);
arg_sz = sizeof ( arg.ifname);
break;
#endif
case SCTP_OPT_AUTOCLOSE:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_AUTOCLOSE;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case SCTP_OPT_DISABLE_FRAGMENTS:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_DISABLE_FRAGMENTS;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case SCTP_OPT_I_WANT_MAPPED_V4_ADDR:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_I_WANT_MAPPED_V4_ADDR;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case SCTP_OPT_MAXSEG:
{
arg.ival= get_int32 (curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_MAXSEG;
arg_ptr = (char*) (&arg.ival);
arg_sz = sizeof ( arg.ival);
break;
}
case SCTP_OPT_PRIMARY_ADDR:
case SCTP_OPT_SET_PEER_PRIMARY_ADDR:
{
ErlDrvSizeT alen;
CHKLEN(curr, ASSOC_ID_LEN);
/* XXX: These 2 opts have isomorphic value data structures,
"sctp_setpeerprim" and "sctp_prim" (in Solaris 10, the latter
is called "sctp_setprim"), so we grouped them together:
*/
arg.prim.sspp_assoc_id = GET_ASSOC_ID(curr); curr += ASSOC_ID_LEN;
/* Fill in "arg.prim.sspp_addr": */
alen = ptr + len - curr;
if (inet_set_faddress
(desc->sfamily, (inet_address*) (&arg.prim.sspp_addr),
&curr, &alen) != NULL) return -1;
proto = IPPROTO_SCTP;
if (eopt == SCTP_OPT_PRIMARY_ADDR)
type = SCTP_PRIMARY_ADDR;
else
type = SCTP_SET_PEER_PRIMARY_ADDR;
arg_ptr = (char*) (&arg.prim);
arg_sz = sizeof ( arg.prim);
break;
}
case SCTP_OPT_ADAPTATION_LAYER:
{
/* XXX: do we need to convert the Ind into network byte order??? */
arg.ad.ssb_adaptation_ind = sock_htonl (get_int32(curr)); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_ADAPTATION_LAYER;
arg_ptr = (char*) (&arg.ad);
arg_sz = sizeof ( arg.ad);
break;
}
case SCTP_OPT_PEER_ADDR_PARAMS:
{
ErlDrvSizeT alen;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_FLAGS
int eflags, cflags, hb_enable, hb_disable,
pmtud_enable, pmtud_disable;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY
int
sackdelay_enable, sackdelay_disable;
# endif
# endif
CHKLEN(curr, ASSOC_ID_LEN);
arg.pap.spp_assoc_id = GET_ASSOC_ID(curr); curr += ASSOC_ID_LEN;
/* Fill in "pap.spp_address": */
alen = ptr + len - curr;
if (inet_set_faddress
(desc->sfamily, (inet_address*) (&arg.pap.spp_address),
&curr, &alen) != NULL) return -1;
CHKLEN(curr, 4 + 2 + 3*4);
arg.pap.spp_hbinterval = get_int32(curr); curr += 4;
arg.pap.spp_pathmaxrxt = get_int16(curr); curr += 2;
/* The following are missing in Solaris 10: */
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_PATHMTU
arg.pap.spp_pathmtu = get_int32(curr);
# endif
curr += 4;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY
arg.pap.spp_sackdelay = get_int32(curr);
# endif
curr += 4;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_FLAGS
/* Now re-construct the flags: */
eflags = get_int32(curr);
cflags = 0;
hb_enable = eflags & SCTP_FLAG_HB_ENABLE;
hb_disable = eflags & SCTP_FLAG_HB_DISABLE;
if (hb_enable && hb_disable)
return -1;
if (hb_enable) cflags |= SPP_HB_ENABLE;
if (hb_disable) cflags |= SPP_HB_DISABLE;
if (eflags & SCTP_FLAG_HB_DEMAND) cflags |= SPP_HB_DEMAND;
pmtud_enable = eflags & SCTP_FLAG_PMTUD_ENABLE;
pmtud_disable = eflags & SCTP_FLAG_PMTUD_DISABLE;
if (pmtud_enable && pmtud_disable)
return -1;
if (pmtud_enable) cflags |= SPP_PMTUD_ENABLE;
if (pmtud_disable) cflags |= SPP_PMTUD_DISABLE;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY
/* The followings are missing in FreeBSD 7.1 */
sackdelay_enable =eflags& SCTP_FLAG_SACDELAY_ENABLE;
sackdelay_disable=eflags& SCTP_FLAG_SACDELAY_DISABLE;
if (sackdelay_enable && sackdelay_disable)
return -1;
if (sackdelay_enable) cflags |= SPP_SACKDELAY_ENABLE;
if (sackdelay_disable) cflags |= SPP_SACKDELAY_DISABLE;
# endif
arg.pap.spp_flags = cflags;
# endif
curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_PEER_ADDR_PARAMS;
arg_ptr = (char*) (&arg.pap);
arg_sz = sizeof ( arg.pap);
break;
}
case SCTP_OPT_DEFAULT_SEND_PARAM:
{
CHKLEN(curr, SCTP_GET_SENDPARAMS_LEN);
curr = sctp_get_sendparams (&arg.sri, curr);
proto = IPPROTO_SCTP;
type = SCTP_DEFAULT_SEND_PARAM;
arg_ptr = (char*) (&arg.sri);
arg_sz = sizeof ( arg.sri);
VALGRIND_MAKE_MEM_DEFINED(arg_ptr, arg_sz); /*suppress "uninitialised bytes"*/
break;
}
case SCTP_OPT_EVENTS:
{
CHKLEN(curr, 9);
/* We do not support "sctp_authentication_event" -- it is not
implemented in Linux Kernel SCTP anyway. Just in case if
the above structure has more fields than we support, zero
it out -- the extraneous events will NOT be used:
*/
memset (&arg.es, 0, sizeof(arg.es));
/* The input "buf" must contain the full definition of all the
supported event fields, 1 byte per each, as each event is
either explicitly subscribed or cleared:
*/
arg.es.sctp_data_io_event = get_int8(curr); curr++;
arg.es.sctp_association_event = get_int8(curr); curr++;
arg.es.sctp_address_event = get_int8(curr); curr++;
arg.es.sctp_send_failure_event = get_int8(curr); curr++;
arg.es.sctp_peer_error_event = get_int8(curr); curr++;
arg.es.sctp_shutdown_event = get_int8(curr); curr++;
arg.es.sctp_partial_delivery_event = get_int8(curr); curr++;
arg.es.sctp_adaptation_layer_event = get_int8(curr); curr++;
/* sctp_authentication_event not implemented */ curr++;
proto = IPPROTO_SCTP;
type = SCTP_EVENTS;
arg_ptr = (char*) (&arg.es);
arg_sz = sizeof ( arg.es);
break;
}
/* The following is not available on Solaris 10: */
# ifdef SCTP_DELAYED_ACK_TIME
case SCTP_OPT_DELAYED_ACK_TIME:
{
CHKLEN(curr, ASSOC_ID_LEN + 4);
arg.av.assoc_id = GET_ASSOC_ID(curr); curr += ASSOC_ID_LEN;
arg.av.assoc_value = get_int32(curr); curr += 4;
proto = IPPROTO_SCTP;
type = SCTP_DELAYED_ACK_TIME;
arg_ptr = (char*) (&arg.av);
arg_sz = sizeof ( arg.av);
break;
}
# endif
default:
/* XXX: No more supported SCTP options. In particular, authentica-
tion options (SCTP_AUTH_CHUNK, SCTP_AUTH_KEY, SCTP_PEER_AUTH_
CHUNKS, SCTP_LOCAL_AUTH_CHUNKS, SCTP_AUTH_SETKEY_ACTIVE) are
not yet implemented in the Linux kernel, hence not supported
here. Also not supported are SCTP_HMAC_IDENT, as well as any
"generic" options except "INET_LOPT_MODE". Raise an error:
*/
return -1;
}
#if defined(IP_TOS) && defined(IPPROTO_IP) \
&& defined(SO_PRIORITY) && !defined(__WIN32__)
res = setopt_prio_tos_trick (desc->s, proto, type, arg_ptr, arg_sz, 1);
#else
res = sock_setopt (desc->s, proto, type, arg_ptr, arg_sz);
#endif
/* The return values of "sock_setopt" can only be 0 or -1: */
ASSERT(res == 0 || res == -1);
if (res == 0) desc->recv_cmsgflags = recv_cmsgflags;
if (res == -1)
{ /* Got an error, DO NOT continue with other options. However, on
Solaris 10, we DO allow SO_SNDBUF and SO_RCVBUF to fail, assu-
min that the default kernel versions are good enough:
*/
# ifdef SOLARIS10
if (type != SO_SNDBUF && type != SO_RCVBUF)
# endif
return res;
}
}
/* If we got here, all "sock_setopt"s above were successful: */
if (IS_OPEN(desc) && desc->active != old_active) {
sock_select(desc, (FD_READ|FD_CLOSE), (desc->active > 0));
}
return 0;
# undef CHKLEN
}
#endif /* HAVE_SCTP */
#ifndef __WIN32__
static void put_cmsg_int32(struct cmsghdr *cmsg, char *ptr) {
union u {
byte uint8;
Uint16 uint16;
Uint32 uint32;
Uint64 uint64;
} *p;
p = (union u*) CMSG_DATA(cmsg);
switch (LEN_CMSG_DATA(cmsg) * CHAR_BIT) {
case 8:
put_int32((Uint32) p->uint8, ptr);
break;
case 16:
put_int32((Uint32) p->uint16, ptr);
break;
case 32:
put_int32(p->uint32, ptr);
break;
case 64:
put_int32((Uint32) p->uint64, ptr);
break;
default:
put_int32(0, ptr);
}
return;
}
#endif
/* load all option values into the buf and reply
** return total length of reply filled into ptr
** ptr should point to a buffer with 9*len +1 to be safe!!
*/
static ErlDrvSSizeT inet_fill_opts(inet_descriptor* desc,
char* buf, ErlDrvSizeT len,
char** dest, ErlDrvSizeT destlen)
{
int type;
int proto;
int opt;
struct linger li_val;
int ival;
char* arg_ptr;
unsigned int arg_sz;
char *ptr = NULL;
ErlDrvSizeT dest_used = 0;
ErlDrvSizeT dest_allocated = destlen;
char *orig_dest = *dest;
#ifdef SO_BINDTODEVICE
char ifname[IFNAMSIZ];
#endif
/* Ptr is a name parameter */
#define RETURN_ERROR() \
do { \
if (dest_allocated > destlen) { \
FREE(*dest); \
*dest = orig_dest; \
} \
return -1; \
} while(0)
#define PLACE_FOR(Size,Ptr) \
do { \
ErlDrvSizeT need = dest_used + (Size); \
if (need > INET_MAX_OPT_BUFFER) { \
RETURN_ERROR(); \
} \
if (need > dest_allocated) { \
char *new_buffer; \
if (dest_allocated == destlen) { \
new_buffer = ALLOC((dest_allocated = need + 10)); \
memcpy(new_buffer,*dest,dest_used); \
} else { \
new_buffer = REALLOC(*dest, (dest_allocated = need + 10)); \
} \
*dest = new_buffer; \
} \
(Ptr) = (*dest) + dest_used; \
dest_used = need; \
} while (0)
/* Ptr is a name parameter */
#define TRUNCATE_TO(Size,Ptr) \
do { \
ErlDrvSizeT new_need = ((Ptr) - (*dest)) + (Size); \
if (new_need > dest_used) { \
erts_exit(ERTS_ERROR_EXIT,"Internal error in inet_drv, " \
"miscalculated buffer size"); \
} \
dest_used = new_need; \
} while(0)
PLACE_FOR(1,ptr);
*ptr = INET_REP_OK;
while(len--) {
opt = *buf++;
proto = SOL_SOCKET;
ival = 0; /* Windows Vista needs this (only writes part of it) */
arg_sz = sizeof(ival);
arg_ptr = (char*) &ival;
PLACE_FOR(5,ptr);
switch(opt) {
case INET_LOPT_BUFFER:
*ptr++ = opt;
put_int32(desc->bufsz, ptr);
continue;
case INET_LOPT_HEADER:
*ptr++ = opt;
put_int32(desc->hsz, ptr);
continue;
case INET_LOPT_MODE:
*ptr++ = opt;
put_int32(desc->mode, ptr);
continue;
case INET_LOPT_DELIVER:
*ptr++ = opt;
put_int32(desc->deliver, ptr);
continue;
case INET_LOPT_ACTIVE:
*ptr++ = opt;
put_int32(desc->active, ptr);
if (desc->active == INET_MULTI) {
PLACE_FOR(2,ptr);
put_int16(desc->active_count, ptr);
ptr += 2;
}
continue;
case INET_LOPT_PACKET:
*ptr++ = opt;
put_int32(desc->htype, ptr);
continue;
case INET_LOPT_PACKET_SIZE:
*ptr++ = opt;
put_int32(desc->psize, ptr);
continue;
case INET_LOPT_EXITONCLOSE:
*ptr++ = opt;
put_int32(desc->exitf, ptr);
continue;
case INET_LOPT_TCP_HIWTRMRK:
if (desc->stype == SOCK_STREAM) {
*ptr++ = opt;
ival = ((tcp_descriptor*)desc)->high;
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
case INET_LOPT_TCP_LOWTRMRK:
if (desc->stype == SOCK_STREAM) {
*ptr++ = opt;
ival = ((tcp_descriptor*)desc)->low;
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
case INET_LOPT_MSGQ_HIWTRMRK: {
ErlDrvSizeT high = ERL_DRV_BUSY_MSGQ_READ_ONLY;
*ptr++ = opt;
erl_drv_busy_msgq_limits(desc->port, NULL, &high);
ival = high > INT_MAX ? INT_MAX : (int) high;
put_int32(ival, ptr);
continue;
}
case INET_LOPT_MSGQ_LOWTRMRK: {
ErlDrvSizeT low = ERL_DRV_BUSY_MSGQ_READ_ONLY;
*ptr++ = opt;
erl_drv_busy_msgq_limits(desc->port, &low, NULL);
ival = low > INT_MAX ? INT_MAX : (int) low;
put_int32(ival, ptr);
continue;
}
case INET_LOPT_TCP_SEND_TIMEOUT:
if (desc->stype == SOCK_STREAM) {
*ptr++ = opt;
ival = ((tcp_descriptor*)desc)->send_timeout;
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
case INET_LOPT_TCP_SEND_TIMEOUT_CLOSE:
if (desc->stype == SOCK_STREAM) {
*ptr++ = opt;
ival = ((tcp_descriptor*)desc)->send_timeout_close;
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
case INET_LOPT_TCP_DELAY_SEND:
if (desc->stype == SOCK_STREAM) {
*ptr++ = opt;
ival = !!(((tcp_descriptor*)desc)->tcp_add_flags & TCP_ADDF_DELAY_SEND);
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
#ifdef HAVE_UDP
case INET_LOPT_UDP_READ_PACKETS:
if (desc->stype == SOCK_DGRAM) {
*ptr++ = opt;
ival = ((udp_descriptor*)desc)->read_packets;
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
#endif
#ifdef HAVE_SETNS
case INET_LOPT_NETNS:
if (desc->netns != NULL) {
size_t netns_len;
netns_len = strlen(desc->netns);
*ptr++ = opt;
put_int32(netns_len, ptr);
PLACE_FOR(netns_len, ptr);
memcpy(ptr, desc->netns, netns_len);
ptr += netns_len;
} else {
TRUNCATE_TO(0,ptr);
}
continue;
#endif
case INET_LOPT_TCP_SHOW_ECONNRESET:
if (desc->sprotocol == IPPROTO_TCP) {
tcp_descriptor* tdesc = (tcp_descriptor*) desc;
*ptr++ = opt;
ival = !!(tdesc->tcp_add_flags & TCP_ADDF_SHOW_ECONNRESET);
put_int32(ival, ptr);
} else {
TRUNCATE_TO(0,ptr);
}
continue;
case INET_OPT_PRIORITY:
#ifdef SO_PRIORITY
type = SO_PRIORITY;
break;
#else
*ptr++ = opt;
put_int32(0, ptr);
continue;
#endif
case INET_OPT_TOS:
#if defined(IP_TOS) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_TOS;
break;
#else
*ptr++ = opt;
put_int32(0, ptr);
continue;
#endif
case INET_OPT_TCLASS:
#if defined(IPV6_TCLASS) && defined(IPPROTO_IPV6)
proto = IPPROTO_IPV6;
type = IPV6_TCLASS;
break;
#else
TRUNCATE_TO(0,ptr);
continue;
#endif
case INET_OPT_TTL:
#if defined(IP_TTL) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_TTL;
break;
#else
TRUNCATE_TO(0,ptr);
continue;
#endif
case INET_OPT_RECVTOS:
#if defined(IP_RECVTOS) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_RECVTOS;
break;
#else
TRUNCATE_TO(0,ptr);
continue;
#endif
case INET_OPT_RECVTCLASS:
#if defined(IPV6_RECVTCLASS) && defined(IPPROTO_IPV6)
proto = IPPROTO_IPV6;
type = IPV6_RECVTCLASS;
break;
#else
TRUNCATE_TO(0,ptr);
continue;
#endif
case INET_OPT_RECVTTL:
#if defined(IP_RECVTTL) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_RECVTTL;
break;
#else
TRUNCATE_TO(0,ptr);
continue;
#endif
case INET_OPT_REUSEADDR:
type = SO_REUSEADDR;
break;
case INET_OPT_KEEPALIVE:
type = SO_KEEPALIVE;
break;
case INET_OPT_DONTROUTE:
type = SO_DONTROUTE;
break;
case INET_OPT_BROADCAST:
type = SO_BROADCAST;
break;
case INET_OPT_OOBINLINE:
type = SO_OOBINLINE;
break;
case INET_OPT_SNDBUF:
type = SO_SNDBUF;
break;
case INET_OPT_RCVBUF:
type = SO_RCVBUF;
break;
case TCP_OPT_NODELAY:
proto = IPPROTO_TCP;
type = TCP_NODELAY;
break;
case TCP_OPT_NOPUSH:
#if defined(INET_TCP_NOPUSH)
proto = IPPROTO_TCP;
type = INET_TCP_NOPUSH;
break;
#else
*ptr++ = opt;
put_int32(0, ptr);
continue;
#endif
#if defined(HAVE_MULTICAST_SUPPORT) && defined(IPPROTO_IP)
case UDP_OPT_MULTICAST_TTL:
proto = IPPROTO_IP;
type = IP_MULTICAST_TTL;
break;
case UDP_OPT_MULTICAST_LOOP:
proto = IPPROTO_IP;
type = IP_MULTICAST_LOOP;
break;
case UDP_OPT_MULTICAST_IF:
proto = IPPROTO_IP;
type = IP_MULTICAST_IF;
break;
case INET_OPT_LINGER:
arg_sz = sizeof(li_val);
sys_memzero((void *) &li_val, sizeof(li_val));
arg_ptr = (char*) &li_val;
type = SO_LINGER;
break;
#endif /* defined(HAVE_MULTICAST_SUPPORT) && defined(IPPROTO_IP) */
case INET_OPT_IPV6_V6ONLY:
#if HAVE_DECL_IPV6_V6ONLY && defined(IPPROTO_IPV6)
proto = IPPROTO_IPV6;
type = IPV6_V6ONLY;
break;
#elif defined(__WIN32__) && defined(HAVE_IN6) && defined(AF_INET6)
/* Fake reading 'true' */
*ptr++ = opt;
put_int32(1, ptr);
ptr += 4;
continue;
#else
TRUNCATE_TO(0,ptr);
continue; /* skip - no result */
#endif
case INET_OPT_RAW:
{
int data_provided;
/* Raw options are icky, handle directly... */
if (len < 13) {
RETURN_ERROR();
}
len -= 13;
proto = get_int32(buf);
buf += 4;
type = get_int32(buf);
buf += 4;
data_provided = (int) *buf++;
arg_sz = get_int32(buf);
if (arg_sz > INET_MAX_OPT_BUFFER) {
RETURN_ERROR();
}
buf += 4;
TRUNCATE_TO(0,ptr);
PLACE_FOR(13 + arg_sz,ptr);
arg_ptr = ptr + 13;
if (data_provided) {
if (len < arg_sz) {
RETURN_ERROR();
}
memcpy(arg_ptr,buf,arg_sz);
buf += arg_sz;
len -= arg_sz;
}
if (IS_SOCKET_ERROR(sock_getopt(desc->s,proto,type,
arg_ptr,&arg_sz))) {
TRUNCATE_TO(0,ptr);
continue;
}
TRUNCATE_TO(arg_sz + 13,ptr);
*ptr++ = opt;
put_int32(proto,ptr);
ptr += 4;
put_int32(type,ptr);
ptr += 4;
put_int32(arg_sz,ptr);
continue;
}
#ifdef SO_BINDTODEVICE
case INET_OPT_BIND_TO_DEVICE:
arg_sz = sizeof(ifname);
TRUNCATE_TO(0,ptr);
PLACE_FOR(5 + arg_sz,ptr);
arg_ptr = ptr + 5;
if (IS_SOCKET_ERROR(sock_getopt(desc->s,SOL_SOCKET,SO_BINDTODEVICE,
arg_ptr,&arg_sz))) {
TRUNCATE_TO(0,ptr);
continue;
}
arg_sz = my_strnlen(arg_ptr, arg_sz);
TRUNCATE_TO(arg_sz + 5,ptr);
*ptr++ = opt;
put_int32(arg_sz,ptr);
ptr += arg_sz;
continue;
#endif
#ifndef __WIN32__
/* Winsock does not have struct cmsghdr */
case INET_OPT_PKTOPTIONS: {
struct cmsghdr *cmsg, *cmsg_top;
SOCKLEN_T cmsg_sz;
union {
/* Ensure alignment */
struct cmsghdr hdr;
/* Room for (IP_TOS | IPV6_TCLASS) + IP_TTL */
char buf[2*CMSG_SPACE(sizeof(int))];
} cmsgbuf;
/* Select between IPv4 or IPv6 PKTOPTIONS
* depending on the socket protocol family
*/
switch (desc->sfamily) {
#if defined(IPPROTO_IP) && defined(IP_PKTOPTIONS)
case AF_INET: {
proto = IPPROTO_IP;
type = IP_PKTOPTIONS;
}
break;
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_PKTOPTIONS) && defined(AF_INET6)
case AF_INET6: {
proto = IPPROTO_IPV6;
type = IPV6_PKTOPTIONS;
}
break;
#endif
default: {
RETURN_ERROR();
}
} /* switch */
TRUNCATE_TO(0, ptr);
/* Fetch a cmsg buffer from the socket */
cmsg_sz = sizeof(cmsgbuf.buf);
if (IS_SOCKET_ERROR(sock_getopt(desc->s, proto, type,
cmsgbuf.buf, &cmsg_sz))) {
continue;
}
/* Reply with Opt/8, Length/32, [COpt/8, Value/32]*
* i.e opt, total length and then all returned
* cmsg options and values
*/
PLACE_FOR(1+4, ptr);
*ptr++ = opt;
arg_ptr = ptr; /* Where to put total length */
arg_sz = 0; /* Total length */
for (cmsg_top = (struct cmsghdr*)(cmsgbuf.buf + cmsg_sz),
cmsg = (struct cmsghdr*)cmsgbuf.buf;
cmsg < cmsg_top;
cmsg = NXT_CMSG_HDR(cmsg)) {
#define PUT_CMSG_INT32(CMSG_LEVEL, CMSG_TYPE, OPT) \
if ((cmsg->cmsg_level == CMSG_LEVEL) && \
(cmsg->cmsg_type == CMSG_TYPE)) { \
PLACE_FOR(1+4, ptr); \
*ptr++ = OPT; \
put_cmsg_int32(cmsg, ptr); \
arg_sz += 1+4; \
continue; \
}
#if defined(IPPROTO_IP) && defined(IP_TOS)
PUT_CMSG_INT32(IPPROTO_IP, IP_TOS, INET_OPT_TOS);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_TCLASS)
PUT_CMSG_INT32(IPPROTO_IPV6, IPV6_TCLASS, INET_OPT_TCLASS);
#endif
#if defined(IPPROTO_IP) && defined(IP_TTL)
PUT_CMSG_INT32(IPPROTO_IP, IP_TTL, INET_OPT_TTL);
#endif
/* BSD uses the RECV* names in CMSG fields */
#if defined(IPPROTO_IP) && defined(IP_RECVTOS)
PUT_CMSG_INT32(IPPROTO_IP, IP_RECVTOS, INET_OPT_TOS);
#endif
#if defined(IPPROTO_IPV6) && defined(IPV6_RECVTCLASS)
PUT_CMSG_INT32(IPPROTO_IPV6, IPV6_RECVTCLASS, INET_OPT_TCLASS);
#endif
#if defined(IPPROTO_IP) && defined(IP_RECVTTL)
PUT_CMSG_INT32(IPPROTO_IP, IP_RECVTTL, INET_OPT_TTL);
#endif
#undef PUT_CMSG_INT32
}
put_int32(arg_sz, arg_ptr); /* Put total length */
continue;
}
#endif /* #ifdef __WIN32__ */
default:
RETURN_ERROR();
}
/* We have 5 bytes allocated to ptr */
if (IS_SOCKET_ERROR(sock_getopt(desc->s,proto,type,arg_ptr,&arg_sz))) {
TRUNCATE_TO(0,ptr);
continue;
}
*ptr++ = opt;
if (arg_ptr == (char*)&ival) {
put_int32(ival, ptr);
}
else {
put_int32(((Uint32) li_val.l_onoff), ptr);
PLACE_FOR(4,ptr);
put_int32(((Uint32) li_val.l_linger), ptr);
}
}
return (dest_used);
#undef PLACE_FOR
#undef TRUNCATE_TO
#undef RETURN_ERROR
}
#ifdef HAVE_SCTP
#define LOAD_PADDRINFO_CNT \
(2*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT + LOAD_INET_GET_ADDRESS_CNT + \
4*LOAD_INT_CNT + LOAD_TUPLE_CNT)
static int load_paddrinfo (ErlDrvTermData * spec, int i,
inet_descriptor* desc, struct sctp_paddrinfo* pai)
{
i = LOAD_ATOM (spec, i, am_sctp_paddrinfo);
i = LOAD_ASSOC_ID (spec, i, pai->spinfo_assoc_id);
i = load_inet_get_address(spec, i, desc, &pai->spinfo_address);
switch(pai->spinfo_state)
{
case SCTP_ACTIVE:
i = LOAD_ATOM (spec, i, am_active);
break;
case SCTP_INACTIVE:
i = LOAD_ATOM (spec, i, am_inactive);
break;
# if HAVE_DECL_SCTP_UNCONFIRMED
case SCTP_UNCONFIRMED:
i = LOAD_ATOM (spec, i, am_unconfirmed);
break;
# endif
default:
i = LOAD_ATOM (spec, i, am_undefined);
}
i = LOAD_INT (spec, i, pai->spinfo_cwnd);
i = LOAD_INT (spec, i, pai->spinfo_srtt);
i = LOAD_INT (spec, i, pai->spinfo_rto );
i = LOAD_INT (spec, i, pai->spinfo_mtu );
/* Close up the record: */
i = LOAD_TUPLE (spec, i, 8);
return i;
}
/*
** "sctp_fill_opts": Returns {ok, Results}, or an error:
*/
static ErlDrvSSizeT sctp_fill_opts(inet_descriptor* desc,
char* buf, ErlDrvSizeT buflen,
char** dest, ErlDrvSizeT destlen)
{
/* In contrast to the generic "inet_fill_opts", the output here is
represented by tuples/records, which are formed in the "spec":
*/
ErlDrvTermData *spec;
int i = 0;
int length = 0; /* Number of result list entries */
int spec_allocated = PACKET_ERL_DRV_TERM_DATA_LEN;
spec = ALLOC(sizeof(* spec) * spec_allocated);
# define RETURN_ERROR(Spec, Errno) \
do { \
FREE(Spec); \
return (Errno); \
} while(0)
/* Spec is a name parmeter */
# define PLACE_FOR(Spec, Index, N) \
do { \
int need; \
if ((Index) > spec_allocated) { \
erts_exit(ERTS_ERROR_EXIT,"Internal error in inet_drv, " \
"miscalculated buffer size"); \
} \
need = (Index) + (N); \
if (need > INET_MAX_OPT_BUFFER/sizeof(ErlDrvTermData)) {\
RETURN_ERROR((Spec), -ENOMEM); \
} \
if (need > spec_allocated) { \
(Spec) = REALLOC((Spec), \
sizeof(* (Spec)) \
* (spec_allocated = need + 20)); \
} \
} while (0)
PLACE_FOR(spec, i, 2*LOAD_ATOM_CNT + LOAD_PORT_CNT);
i = LOAD_ATOM (spec, i, am_inet_reply);
i = LOAD_PORT (spec, i, desc->dport);
i = LOAD_ATOM (spec, i, am_ok);
while (buflen > 0) {
int eopt = *buf; /* "eopt" is 1-byte encoded */
buf ++; buflen --;
switch(eopt)
{
/* Local options allowed for SCTP. For TCP and UDP, the values of
these options are returned via "res" using integer encoding,
but here, we encode them as proper terms the same way as we do
it for all other SCTP options:
*/
case INET_LOPT_BUFFER:
{
PLACE_FOR(spec, i, LOAD_ATOM_CNT + LOAD_INT_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_buffer);
i = LOAD_INT (spec, i, desc->bufsz);
i = LOAD_TUPLE(spec, i, 2);
break;
}
case INET_LOPT_MODE:
{
PLACE_FOR(spec, i, 2*LOAD_ATOM_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_mode);
switch (desc->mode)
{
case INET_MODE_LIST :
{ i = LOAD_ATOM (spec, i, am_list); break; }
case INET_MODE_BINARY:
{ i = LOAD_ATOM (spec, i, am_binary); break; }
default: ASSERT (0);
}
i = LOAD_TUPLE (spec, i, 2);
break;
}
case INET_LOPT_ACTIVE:
{
if (desc->active == INET_MULTI)
PLACE_FOR(spec, i, LOAD_ATOM_CNT + LOAD_INT_CNT + LOAD_TUPLE_CNT);
else
PLACE_FOR(spec, i, 2*LOAD_ATOM_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_active);
switch (desc->active)
{
case INET_ACTIVE :
{ i = LOAD_ATOM (spec, i, am_true); break; }
case INET_PASSIVE:
{ i = LOAD_ATOM (spec, i, am_false); break; }
case INET_ONCE :
{ i = LOAD_ATOM (spec, i, am_once); break; }
case INET_MULTI :
{ i = LOAD_INT(spec, i, desc->active_count); break; }
default: ASSERT (0);
}
i = LOAD_TUPLE (spec, i, 2);
break;
}
#ifdef HAVE_SETNS
case INET_LOPT_NETNS:
if (desc->netns != NULL) {
PLACE_FOR
(spec, i,
LOAD_ATOM_CNT + LOAD_BUF2BINARY_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_netns);
i = LOAD_BUF2BINARY
(spec, i, desc->netns, strlen(desc->netns));
i = LOAD_TUPLE (spec, i, 2);
break;
}
else
continue; /* Ignore */
#endif
/* SCTP and generic INET options: */
case SCTP_OPT_RTOINFO:
{
struct sctp_rtoinfo rti;
unsigned int sz = sizeof(rti);
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
rti.srto_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_RTOINFO,
&rti, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT +
3*LOAD_INT_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_rtoinfo);
i = LOAD_ATOM (spec, i, am_sctp_rtoinfo);
i = LOAD_ASSOC_ID (spec, i, rti.srto_assoc_id);
i = LOAD_INT (spec, i, rti.srto_initial);
i = LOAD_INT (spec, i, rti.srto_max);
i = LOAD_INT (spec, i, rti.srto_min);
i = LOAD_TUPLE (spec, i, 5);
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_ASSOCINFO:
{
struct sctp_assocparams ap;
unsigned int sz = sizeof(ap);
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
ap.sasoc_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_ASSOCINFO,
&ap, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT +
5*LOAD_INT_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_associnfo);
i = LOAD_ATOM (spec, i, am_sctp_assocparams);
i = LOAD_ASSOC_ID (spec, i, ap.sasoc_assoc_id);
i = LOAD_INT (spec, i, ap.sasoc_asocmaxrxt);
i = LOAD_INT (spec, i, ap.sasoc_number_peer_destinations);
i = LOAD_INT (spec, i, ap.sasoc_peer_rwnd);
i = LOAD_INT (spec, i, ap.sasoc_local_rwnd);
i = LOAD_INT (spec, i, ap.sasoc_cookie_life);
i = LOAD_TUPLE (spec, i, 7);
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_INITMSG:
{
struct sctp_initmsg im;
unsigned int sz = sizeof(im);
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_INITMSG,
&im, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT +
4*LOAD_INT_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_initmsg);
i = LOAD_ATOM (spec, i, am_sctp_initmsg);
i = LOAD_INT (spec, i, im.sinit_num_ostreams);
i = LOAD_INT (spec, i, im.sinit_max_instreams);
i = LOAD_INT (spec, i, im.sinit_max_attempts);
i = LOAD_INT (spec, i, im.sinit_max_init_timeo);
i = LOAD_TUPLE (spec, i, 5);
i = LOAD_TUPLE (spec, i, 2);
break;
}
/* The following option returns a tuple {bool, int}: */
case INET_OPT_LINGER:
{
struct linger lg;
unsigned int sz = sizeof(lg);
if (sock_getopt(desc->s, SOL_SOCKET, SO_LINGER,
&lg, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
LOAD_ATOM_CNT + LOAD_BOOL_CNT +
LOAD_INT_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_linger);
i = LOAD_BOOL (spec, i, lg.l_onoff);
i = LOAD_INT (spec, i, lg.l_linger);
i = LOAD_TUPLE (spec, i, 2);
i = LOAD_TUPLE (spec, i, 2);
break;
}
#ifdef SO_BINDTODEVICE
/* The following option returns a binary: */
case INET_OPT_BIND_TO_DEVICE: {
char ifname[IFNAMSIZ];
unsigned int sz = sizeof(ifname);
if (sock_getopt(desc->s, SOL_SOCKET, SO_BINDTODEVICE,
&ifname, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
LOAD_ATOM_CNT + LOAD_BUF2BINARY_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_bind_to_device);
i = LOAD_BUF2BINARY(spec, i, ifname, my_strnlen(ifname, sz));
i = LOAD_TUPLE (spec, i, 2);
break;
}
#endif
/* The following options just return an integer value: */
case INET_OPT_RCVBUF :
case INET_OPT_SNDBUF :
case INET_OPT_REUSEADDR:
case INET_OPT_DONTROUTE:
case INET_OPT_PRIORITY :
case INET_OPT_TOS :
case INET_OPT_TCLASS :
case INET_OPT_TTL :
case INET_OPT_IPV6_V6ONLY:
case SCTP_OPT_AUTOCLOSE:
case SCTP_OPT_MAXSEG :
/* The following options return true or false: */
case SCTP_OPT_NODELAY :
case SCTP_OPT_DISABLE_FRAGMENTS:
case SCTP_OPT_I_WANT_MAPPED_V4_ADDR:
case INET_OPT_RECVTOS :
case INET_OPT_RECVTCLASS :
case INET_OPT_RECVTTL :
{
int res = 0;
unsigned int sz = sizeof(res);
int proto = 0, type = 0, is_int = 0;
ErlDrvTermData tag = am_sctp_error;
switch(eopt)
{
case INET_OPT_RCVBUF :
{
proto = SOL_SOCKET;
type = SO_RCVBUF;
is_int = 1;
tag = am_recbuf;
break;
}
case INET_OPT_SNDBUF :
{
proto = SOL_SOCKET;
type = SO_SNDBUF;
is_int = 1;
tag = am_sndbuf;
break;
}
case INET_OPT_REUSEADDR:
{
proto = SOL_SOCKET;
type = SO_REUSEADDR;
is_int = 0;
tag = am_reuseaddr;
break;
}
case INET_OPT_DONTROUTE:
{
proto = SOL_SOCKET;
type = SO_DONTROUTE;
is_int = 0;
tag = am_dontroute;
break;
}
case INET_OPT_PRIORITY:
{
# if defined(SO_PRIORITY)
proto = SOL_SOCKET;
type = SO_PRIORITY;
is_int = 1;
tag = am_priority;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_TOS:
{
# if defined(IP_TOS) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_TOS;
is_int = 1;
tag = am_tos;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_TCLASS:
{
# if defined(IPV6_TCLASS) && defined(IPPROTO_IPV6)
proto = IPPROTO_IPV6;
type = IPV6_TCLASS;
is_int = 1;
tag = am_tclass;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_TTL:
{
# if defined(IP_TTL) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_TTL;
is_int = 1;
tag = am_ttl;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_RECVTOS:
{
# if defined(IP_RECVTOS) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_RECVTOS;
is_int = 0;
tag = am_recvtos;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_RECVTCLASS:
{
# if defined(IPV6_RECVTCLASS) && defined(IPPROTO_IPV6)
proto = IPPROTO_IPV6;
type = IPV6_RECVTCLASS;
is_int = 0;
tag = am_recvtclass;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_RECVTTL:
{
# if defined(IP_RECVTTL) && defined(IPPROTO_IP)
proto = IPPROTO_IP;
type = IP_RECVTTL;
is_int = 0;
tag = am_recvttl;
break;
# else
/* Not supported -- ignore */
continue;
# endif
}
case INET_OPT_IPV6_V6ONLY:
# if HAVE_DECL_IPV6_V6ONLY && defined(IPPROTO_IPV6)
{
proto = IPPROTO_IPV6;
type = IPV6_V6ONLY;
tag = am_ipv6_v6only;
break;
}
# elif defined(__WIN32__) && defined(HAVE_IN6) && defined(AF_INET6)
# error Here is a fix for Win IPv6 SCTP needed
# else
/* Not supported -- ignore */
continue;
# endif
case SCTP_OPT_AUTOCLOSE:
{
proto = IPPROTO_SCTP;
type = SCTP_AUTOCLOSE;
is_int = 1;
tag = am_sctp_autoclose;
break;
}
case SCTP_OPT_MAXSEG :
{
proto = IPPROTO_SCTP;
type = SCTP_MAXSEG;
is_int = 1;
tag = am_sctp_maxseg;
break;
}
case SCTP_OPT_NODELAY :
{
proto = IPPROTO_SCTP;
type = SCTP_NODELAY;
is_int = 0;
tag = am_sctp_nodelay;
break;
}
case SCTP_OPT_DISABLE_FRAGMENTS:
{
proto = IPPROTO_SCTP;
type = SCTP_DISABLE_FRAGMENTS;
is_int = 0;
tag = am_sctp_disable_fragments;
break;
}
case SCTP_OPT_I_WANT_MAPPED_V4_ADDR:
{
proto = IPPROTO_SCTP;
type = SCTP_I_WANT_MAPPED_V4_ADDR;
is_int = 0;
tag = am_sctp_i_want_mapped_v4_addr;
break;
}
default: ASSERT(0);
}
if (sock_getopt (desc->s, proto, type, &res, &sz) < 0) continue;
/* Form the result: */
PLACE_FOR(spec, i, LOAD_ATOM_CNT +
(is_int ? LOAD_INT_CNT : LOAD_BOOL_CNT) +
LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, tag);
if (is_int)
i = LOAD_INT (spec, i, res);
else
i = LOAD_BOOL (spec, i, res);
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_PRIMARY_ADDR:
case SCTP_OPT_SET_PEER_PRIMARY_ADDR:
{
/* These 2 options use completely isomorphic data structures: */
struct sctp_setpeerprim sp;
unsigned int sz = sizeof(sp);
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
sp.sspp_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
if (sock_getopt(desc->s, IPPROTO_SCTP,
(eopt == SCTP_OPT_PRIMARY_ADDR) ?
SCTP_PRIMARY_ADDR : SCTP_SET_PEER_PRIMARY_ADDR,
&sp, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT +
LOAD_INET_GET_ADDRESS_CNT + 2*LOAD_TUPLE_CNT);
switch (eopt) {
case SCTP_OPT_PRIMARY_ADDR:
i = LOAD_ATOM(spec, i, am_sctp_primary_addr);
i = LOAD_ATOM(spec, i, am_sctp_prim);
break;
case SCTP_OPT_SET_PEER_PRIMARY_ADDR:
i = LOAD_ATOM(spec, i, am_sctp_set_peer_primary_addr);
i = LOAD_ATOM(spec, i, am_sctp_setpeerprim);
break;
default:
ASSERT(0);
}
i = LOAD_ASSOC_ID (spec, i, sp.sspp_assoc_id);
i = load_inet_get_address(spec, i, desc, &sp.sspp_addr);
i = LOAD_TUPLE (spec, i, 3);
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_ADAPTATION_LAYER:
{
struct sctp_setadaptation ad;
unsigned int sz = sizeof (ad);
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_ADAPTATION_LAYER,
&ad, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT + LOAD_INT_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_adaptation_layer);
i = LOAD_ATOM (spec, i, am_sctp_setadaptation);
i = LOAD_INT (spec, i, sock_ntohl(ad.ssb_adaptation_ind));
i = LOAD_TUPLE (spec, i, 2);
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_PEER_ADDR_PARAMS:
{
struct sctp_paddrparams ap;
unsigned int sz = sizeof(ap);
int n;
char *before, *xerror;
ErlDrvSizeT alen;
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
ap.spp_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
alen = buflen;
before = buf;
xerror =
inet_set_faddress
(desc->sfamily, (inet_address*) (&ap.spp_address),
&buf, &alen);
if (xerror != NULL) {
#ifdef EAFNOSUPPORT
if (xerror == str_eafnosupport) {
RETURN_ERROR(spec, -EAFNOSUPPORT);
}
#else
RETURN_ERROR(spec, -EINVAL);
#endif
}
buflen -= buf - before;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_PEER_ADDR_PARAMS,
&ap, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT +
LOAD_INET_GET_ADDRESS_CNT + 4*LOAD_INT_CNT);
i = LOAD_ATOM (spec, i, am_sctp_peer_addr_params);
i = LOAD_ATOM (spec, i, am_sctp_paddrparams);
i = LOAD_ASSOC_ID (spec, i, ap.spp_assoc_id);
i = load_inet_get_address(spec, i, desc, &ap.spp_address);
i = LOAD_INT (spec, i, ap.spp_hbinterval);
i = LOAD_INT (spec, i, ap.spp_pathmaxrxt);
/* The following fields are not suported in SOLARIS10,
** so put 0s for "spp_pathmtu", "spp_sackdelay",
** and empty list for "spp_flags":
*/
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_PATHMTU
i = LOAD_INT (spec, i, ap.spp_pathmtu);
# else
i = LOAD_INT (spec, i, 0);
# endif
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY
i = LOAD_INT (spec, i, ap.spp_sackdelay);
# else
i = LOAD_INT (spec, i, 0);
# endif
n = 0;
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_FLAGS
PLACE_FOR(spec, i, 7*LOAD_ATOM_CNT);
/* Now Flags, as a list: */
if (ap.spp_flags & SPP_HB_ENABLE)
{ i = LOAD_ATOM (spec, i, am_hb_enable); n++; }
if (ap.spp_flags & SPP_HB_DISABLE)
{ i = LOAD_ATOM (spec, i, am_hb_disable); n++; }
if (ap.spp_flags & SPP_HB_DEMAND)
{ i = LOAD_ATOM (spec, i, am_hb_demand); n++; }
if (ap.spp_flags & SPP_PMTUD_ENABLE)
{ i = LOAD_ATOM (spec, i, am_pmtud_enable); n++; }
if (ap.spp_flags & SPP_PMTUD_DISABLE)
{ i = LOAD_ATOM (spec, i, am_pmtud_disable); n++; }
# ifdef HAVE_STRUCT_SCTP_PADDRPARAMS_SPP_SACKDELAY
/* SPP_SACKDELAY_* not in FreeBSD 7.1 */
if (ap.spp_flags & SPP_SACKDELAY_ENABLE)
{ i = LOAD_ATOM (spec, i, am_sackdelay_enable); n++; }
if (ap.spp_flags & SPP_SACKDELAY_DISABLE)
{ i = LOAD_ATOM (spec, i, am_sackdelay_disable); n++; }
# endif
# endif
PLACE_FOR(spec, i,
LOAD_NIL_CNT + LOAD_LIST_CNT + 2*LOAD_TUPLE_CNT);
/* Close up the Flags list: */
i = LOAD_NIL (spec, i);
i = LOAD_LIST (spec, i, n+1);
/* Close up the record: */
i = LOAD_TUPLE (spec, i, 8);
/* Close up the result tuple: */
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_DEFAULT_SEND_PARAM:
{
struct sctp_sndrcvinfo sri;
unsigned int sz = sizeof(sri);
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
sri.sinfo_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_DEFAULT_SEND_PARAM,
&sri, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i, LOAD_ATOM_CNT +
SCTP_PARSE_SNDRCVINFO_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM(spec, i, am_sctp_default_send_param);
i = sctp_parse_sndrcvinfo(spec, i, &sri);
i = LOAD_TUPLE(spec, i, 2);
break;
}
case SCTP_OPT_EVENTS:
{
struct sctp_event_subscribe evs;
unsigned int sz = sizeof(evs);
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_EVENTS,
&evs, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
2*LOAD_ATOM_CNT + 9*LOAD_BOOL_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_events);
i = LOAD_ATOM (spec, i, am_sctp_event_subscribe);
i = LOAD_BOOL (spec, i, evs.sctp_data_io_event);
i = LOAD_BOOL (spec, i, evs.sctp_association_event);
i = LOAD_BOOL (spec, i, evs.sctp_address_event);
i = LOAD_BOOL (spec, i, evs.sctp_send_failure_event);
i = LOAD_BOOL (spec, i, evs.sctp_peer_error_event);
i = LOAD_BOOL (spec, i, evs.sctp_shutdown_event);
i = LOAD_BOOL (spec, i, evs.sctp_partial_delivery_event);
i = LOAD_BOOL (spec, i, evs.sctp_adaptation_layer_event);
i = LOAD_BOOL (spec, i, 0);/* NB: sctp_authentication_event
* is not yet supported in Linux
*/
i = LOAD_TUPLE (spec, i, 10);
i = LOAD_TUPLE (spec, i, 2);
break;
}
/* The following option is not available in Solaris 10: */
# if HAVE_DECL_SCTP_DELAYED_ACK_TIME
case SCTP_OPT_DELAYED_ACK_TIME:
{
struct sctp_assoc_value av;
unsigned int sz = sizeof(av);
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
av.assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_DELAYED_ACK_TIME,
&av, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i, 2*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT +
LOAD_INT_CNT + 2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_delayed_ack_time);
i = LOAD_ATOM (spec, i, am_sctp_assoc_value);
i = LOAD_ASSOC_ID (spec, i, av.assoc_id);
i = LOAD_INT (spec, i, av.assoc_value);
i = LOAD_TUPLE (spec, i, 3);
i = LOAD_TUPLE (spec, i, 2);
break;
}
# endif
case SCTP_OPT_STATUS:
{
struct sctp_status st;
unsigned int sz = sizeof(st);
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
st.sstat_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_STATUS,
&st, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i, 3*LOAD_ATOM_CNT + LOAD_ASSOC_ID_CNT +
6*LOAD_INT_CNT + LOAD_PADDRINFO_CNT +
2*LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_status);
i = LOAD_ATOM (spec, i, am_sctp_status);
i = LOAD_ASSOC_ID (spec, i, st.sstat_assoc_id);
switch(st.sstat_state)
{
/* SCTP_EMPTY is not supported on SOLARIS10: */
# if HAVE_DECL_SCTP_EMPTY
case SCTP_EMPTY:
i = LOAD_ATOM (spec, i, am_empty);
break;
# endif
case SCTP_CLOSED:
i = LOAD_ATOM (spec, i, am_closed);
break;
# if HAVE_DECL_SCTP_BOUND
case SCTP_BOUND:
i = LOAD_ATOM (spec, i, am_bound);
break;
# endif
# if HAVE_DECL_SCTP_LISTEN
case SCTP_LISTEN:
i = LOAD_ATOM (spec, i, am_listen);
break;
# endif
case SCTP_COOKIE_WAIT:
i = LOAD_ATOM (spec, i, am_cookie_wait);
break;
case SCTP_COOKIE_ECHOED:
i = LOAD_ATOM (spec, i, am_cookie_echoed);
break;
case SCTP_ESTABLISHED:
i = LOAD_ATOM (spec, i, am_established);
break;
case SCTP_SHUTDOWN_PENDING:
i = LOAD_ATOM (spec, i, am_shutdown_pending);
break;
case SCTP_SHUTDOWN_SENT:
i = LOAD_ATOM (spec, i, am_shutdown_sent);
break;
case SCTP_SHUTDOWN_RECEIVED:
i = LOAD_ATOM (spec, i, am_shutdown_received);
break;
case SCTP_SHUTDOWN_ACK_SENT:
i = LOAD_ATOM (spec, i, am_shutdown_ack_sent);
break;
default:
i = LOAD_ATOM (spec, i, am_undefined);
break;
}
i = LOAD_INT (spec, i, st.sstat_rwnd);
i = LOAD_INT (spec, i, st.sstat_unackdata);
i = LOAD_INT (spec, i, st.sstat_penddata);
i = LOAD_INT (spec, i, st.sstat_instrms);
i = LOAD_INT (spec, i, st.sstat_outstrms);
i = LOAD_INT (spec, i, st.sstat_fragmentation_point);
i = load_paddrinfo (spec, i, desc, &st.sstat_primary);
/* Close up the record: */
i = LOAD_TUPLE (spec, i, 10);
/* Close up the result tuple: */
i = LOAD_TUPLE (spec, i, 2);
break;
}
case SCTP_OPT_GET_PEER_ADDR_INFO:
{
struct sctp_paddrinfo pai;
unsigned int sz = sizeof(pai);
char *before, *xerror;
ErlDrvSizeT alen;
if (buflen < ASSOC_ID_LEN) RETURN_ERROR(spec, -EINVAL);
pai.spinfo_assoc_id = GET_ASSOC_ID(buf);
buf += ASSOC_ID_LEN;
buflen -= ASSOC_ID_LEN;
alen = buflen;
before = buf;
xerror =
inet_set_faddress
(desc->sfamily, (inet_address*) (&pai.spinfo_address),
&buf, &alen);
if (xerror != NULL) {
#ifdef EAFNOSUPPORT
if (xerror == str_eafnosupport) {
RETURN_ERROR(spec, -EAFNOSUPPORT);
}
#else
RETURN_ERROR(spec, -EINVAL);
#endif
}
buflen -= buf - before;
if (sock_getopt(desc->s, IPPROTO_SCTP, SCTP_GET_PEER_ADDR_INFO,
&pai, &sz) < 0) continue;
/* Fill in the response: */
PLACE_FOR(spec, i,
LOAD_ATOM_CNT + LOAD_PADDRINFO_CNT + LOAD_TUPLE_CNT);
i = LOAD_ATOM (spec, i, am_sctp_get_peer_addr_info);
i = load_paddrinfo (spec, i, desc, &pai);
i = LOAD_TUPLE (spec, i, 2);
break;
}
default:
RETURN_ERROR(spec, -EINVAL); /* No more valid options */
}
/* If we get here one result has been successfully loaded */
length ++;
}
if (buflen != 0) RETURN_ERROR(spec, -EINVAL); /* Optparam mismatch */
PLACE_FOR(spec, i, LOAD_NIL_CNT + LOAD_LIST_CNT + 2*LOAD_TUPLE_CNT);
/* If we get here, we have "length" options: */
i = LOAD_NIL (spec, i);
i = LOAD_LIST (spec, i, length+1);
/* Close up the {ok, List} response: */
i = LOAD_TUPLE(spec, i, 2);
/* Close up the {inet_reply, S, {ok, List}} response: */
i = LOAD_TUPLE(spec, i, 3);
/* Now, convert "spec" into the returnable term: */
erl_drv_send_term(desc->dport, driver_caller(desc->port), spec, i);
FREE(spec);
(*dest)[0] = INET_REP;
return 1; /* Response length */
# undef PLACE_FOR
# undef RETURN_ERROR
}
#endif
/* fill statistics reply, op codes from src and result in dest
** dst area must be a least 5*len + 1 bytes
*/
static ErlDrvSSizeT inet_fill_stat(inet_descriptor* desc,
char* src, ErlDrvSizeT len, char* dst)
{
unsigned long val;
int op;
char* dst_start = dst;
*dst++ = INET_REP_OK; /* put reply code */
while (len--) {
op = *src++;
*dst++ = op; /* copy op code */
switch(op) {
case INET_STAT_RECV_CNT:
val = desc->recv_cnt;
break;
case INET_STAT_RECV_MAX:
val = (unsigned long) desc->recv_max;
break;
case INET_STAT_RECV_AVG:
val = (unsigned long) desc->recv_avg;
break;
case INET_STAT_RECV_DVI:
val = (unsigned long) fabs(desc->recv_dvi);
break;
case INET_STAT_SEND_CNT:
val = desc->send_cnt;
break;
case INET_STAT_SEND_MAX:
val = desc->send_max;
break;
case INET_STAT_SEND_AVG:
val = (unsigned long) desc->send_avg;
break;
case INET_STAT_SEND_PND:
val = (unsigned long) driver_sizeq(desc->port);
break;
case INET_STAT_RECV_OCT:
#ifdef ARCH_64
put_int64(desc->recv_oct, dst); /* write it all */
#else
put_int32(desc->recv_oct[1], dst); /* write high 32bit */
put_int32(desc->recv_oct[0], dst+4); /* write low 32bit */
#endif
dst += 8;
continue;
case INET_STAT_SEND_OCT:
#ifdef ARCH_64
put_int64(desc->send_oct, dst); /* write it all */
#else
put_int32(desc->send_oct[1], dst); /* write high 32bit */
put_int32(desc->send_oct[0], dst+4); /* write low 32bit */
#endif
dst += 8;
continue;
default: return -1; /* invalid argument */
}
put_int32(val, dst); /* write 32bit value */
dst += 4;
}
return dst - dst_start; /* actual length */
}
static void
send_empty_out_q_msgs(inet_descriptor* desc)
{
ErlDrvTermData msg[6];
int msg_len = 0;
if(NO_SUBSCRIBERS(&desc->empty_out_q_subs))
return;
msg_len = LOAD_ATOM(msg, msg_len, am_empty_out_q);
msg_len = LOAD_PORT(msg, msg_len, desc->dport);
msg_len = LOAD_TUPLE(msg, msg_len, 2);
ASSERT(msg_len == sizeof(msg)/sizeof(*msg));
send_to_subscribers(desc->dport,
&desc->empty_out_q_subs,
1,
msg,
msg_len);
}
/* subscribe and fill subscription reply, op codes from src and
** result in dest dst area must be a least 5*len + 1 bytes
*/
static ErlDrvSSizeT inet_subscribe(inet_descriptor* desc,
char* src, ErlDrvSizeT len, char* dst)
{
unsigned long val;
int op;
char* dst_start = dst;
*dst++ = INET_REP_OK; /* put reply code */
while (len--) {
op = *src++;
*dst++ = op; /* copy op code */
switch(op) {
case INET_SUBS_EMPTY_OUT_Q:
val = driver_sizeq(desc->port);
if(val > 0)
if(!save_subscriber(&desc->empty_out_q_subs,
driver_caller(desc->port)))
return 0;
break;
default: return -1; /* invalid argument */
}
put_int32(val, dst); /* write 32bit value */
dst += 4;
}
return dst - dst_start; /* actual length */
}
/* Terminate socket */
static void inet_stop(inet_descriptor* desc)
{
erl_inet_close(desc);
#ifdef HAVE_SETNS
if (desc->netns != NULL)
FREE(desc->netns);
#endif
FREE(desc);
}
static void inet_emergency_close(ErlDrvData data)
{
/* valid for any (UDP, TCP or SCTP) descriptor */
tcp_descriptor* tcp_desc = (tcp_descriptor*)data;
inet_descriptor* desc = INETP(tcp_desc);
DEBUGF(("inet_emergency_close(%ld) {s=%d\r\n",
(long)desc->port, desc->s));
if (desc->s != INVALID_SOCKET) {
sock_close(desc->s);
}
}
static void set_default_msgq_limits(ErlDrvPort port)
{
ErlDrvSizeT q_high = INET_HIGH_MSGQ_WATERMARK;
ErlDrvSizeT q_low = INET_LOW_MSGQ_WATERMARK;
if (q_low < ERL_DRV_BUSY_MSGQ_LIM_MIN)
q_low = ERL_DRV_BUSY_MSGQ_LIM_MIN;
else if (q_low > ERL_DRV_BUSY_MSGQ_LIM_MAX)
q_low = ERL_DRV_BUSY_MSGQ_LIM_MAX;
if (q_high < ERL_DRV_BUSY_MSGQ_LIM_MIN)
q_high = ERL_DRV_BUSY_MSGQ_LIM_MIN;
else if (q_high > ERL_DRV_BUSY_MSGQ_LIM_MAX)
q_high = ERL_DRV_BUSY_MSGQ_LIM_MAX;
erl_drv_busy_msgq_limits(port, &q_low, &q_high);
}
/* Allocate descriptor */
static ErlDrvData inet_start(ErlDrvPort port, int size, int protocol)
{
inet_descriptor* desc;
if ((desc = (inet_descriptor*) ALLOC(size)) == NULL)
return NULL;
desc->s = INVALID_SOCKET;
desc->event = INVALID_EVENT;
desc->event_mask = 0;
#ifdef __WIN32__
desc->forced_events = 0;
desc->send_would_block = 0;
#endif
desc->port = port;
desc->dport = driver_mk_port(port);
desc->state = INET_STATE_CLOSED;
desc->prebound = 0;
desc->bufsz = INET_DEF_BUFFER;
desc->hsz = 0; /* list header size */
desc->htype = TCP_PB_RAW; /* default packet type */
desc->psize = 0; /* no size check */
desc->stype = -1; /* bad stype */
desc->sfamily = -1;
desc->sprotocol = protocol;
desc->mode = INET_MODE_LIST; /* list mode */
desc->exitf = 1; /* exit port when close on active
socket */
desc->deliver = INET_DELIVER_TERM; /* standard term format */
desc->active = INET_PASSIVE; /* start passive */
desc->active_count = 0;
desc->delimiter = '\n'; /* line delimiting char */
desc->oph = NULL;
desc->opt = NULL;
desc->op_ref = 0;
desc->peer_ptr = NULL;
desc->name_ptr = NULL;
#ifdef ARCH_64
desc->recv_oct = 0;
#else
desc->recv_oct[0] = desc->recv_oct[1] = 0;
#endif
desc->recv_cnt = 0;
desc->recv_max = 0;
desc->recv_avg = 0.0;
desc->recv_dvi = 0.0;
#ifdef ARCH_64
desc->send_oct = 0;
#else
desc->send_oct[0] = desc->send_oct[1] = 0;
#endif
desc->send_cnt = 0;
desc->send_max = 0;
desc->send_avg = 0.0;
desc->empty_out_q_subs.subscriber = NO_PROCESS;
desc->empty_out_q_subs.next = NULL;
sys_memzero((char *)&desc->remote,sizeof(desc->remote));
desc->is_ignored = 0;
#ifdef HAVE_SETNS
desc->netns = NULL;
#endif
desc->recv_cmsgflags = 0;
return (ErlDrvData)desc;
}
/* MAXHOSTNAMELEN could be 64 or 255 depending
on the platform. Instead, use INET_MAXHOSTNAMELEN
which is always 255 across all platforms */
#define INET_MAXHOSTNAMELEN 255
/*
** common TCP/UDP/SCTP control command
*/
static ErlDrvSSizeT inet_ctl(inet_descriptor* desc, int cmd, char* buf,
ErlDrvSizeT len, char** rbuf, ErlDrvSizeT rsize)
{
switch (cmd) {
case INET_REQ_GETSTAT: {
char* dst;
ErlDrvSizeT i;
int dstlen = 1; /* Reply code */
for (i = 0; i < len; i++) {
switch(buf[i]) {
case INET_STAT_SEND_OCT: dstlen += 9; break;
case INET_STAT_RECV_OCT: dstlen += 9; break;
default: dstlen += 5; break;
}
}
DEBUGF(("inet_ctl(%ld): GETSTAT\r\n", (long) desc->port));
if (dstlen > INET_MAX_OPT_BUFFER) /* sanity check */
return 0;
if (dstlen > rsize) {
if ((dst = (char*) ALLOC(dstlen)) == NULL)
return 0;
*rbuf = dst; /* call will free this buffer */
}
else
dst = *rbuf; /* ok we fit in buffer given */
return inet_fill_stat(desc, buf, len, dst);
}
case INET_REQ_SUBSCRIBE: {
char* dst;
int dstlen = 1 /* Reply code */ + len*5;
DEBUGF(("inet_ctl(%ld): INET_REQ_SUBSCRIBE\r\n", (long) desc->port));
if (dstlen > INET_MAX_OPT_BUFFER) /* sanity check */
return 0;
if (dstlen > rsize) {
if ((dst = (char*) ALLOC(dstlen)) == NULL)
return 0;
*rbuf = dst; /* call will free this buffer */
}
else
dst = *rbuf; /* ok we fit in buffer given */
return inet_subscribe(desc, buf, len, dst);
}
case INET_REQ_GETOPTS: { /* get options */
ErlDrvSSizeT replen;
DEBUGF(("inet_ctl(%ld): GETOPTS\r\n", (long)desc->port));
#ifdef HAVE_SCTP
if (IS_SCTP(desc))
{
if ((replen = sctp_fill_opts(desc, buf, len, rbuf, rsize)) < 0)
return ctl_error(-replen, rbuf, rsize);
} else
#endif
if ((replen = inet_fill_opts(desc, buf, len, rbuf, rsize)) < 0) {
return ctl_error(EINVAL, rbuf, rsize);
}
return replen;
}
case INET_REQ_GETIFLIST: {
DEBUGF(("inet_ctl(%ld): GETIFLIST\r\n", (long)desc->port));
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
return inet_ctl_getiflist(desc, rbuf, rsize);
}
case INET_REQ_GETIFADDRS: {
DEBUGF(("inet_ctl(%ld): GETIFADDRS\r\n", (long)desc->port));
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
return inet_ctl_getifaddrs(desc, rbuf, rsize);
}
case INET_REQ_IFGET: {
DEBUGF(("inet_ctl(%ld): IFGET\r\n", (long)desc->port));
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
return inet_ctl_ifget(desc, buf, len, rbuf, rsize);
}
case INET_REQ_IFSET: {
DEBUGF(("inet_ctl(%ld): IFSET\r\n", (long)desc->port));
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
return inet_ctl_ifset(desc, buf, len, rbuf, rsize);
}
case INET_REQ_SETOPTS: { /* set options */
DEBUGF(("inet_ctl(%ld): SETOPTS\r\n", (long)desc->port));
/* XXX fprintf(stderr,"inet_ctl(%ld): SETOPTS (len = %d)\r\n", (long)desc->port,(int) len); */
switch(inet_set_opts(desc, buf, len)) {
case -1:
return ctl_error(EINVAL, rbuf, rsize);
case 0:
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
case 1:
/*
* Let's hope that the descriptor really is a tcp_descriptor here.
*/
/* fprintf(stderr,"Triggered tcp_deliver by setopt.\r\n"); */
tcp_deliver((tcp_descriptor *) desc, 0);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
default:
/* fprintf(stderr,"Triggered tcp_recv by setopt.\r\n"); */
/*
* Same as above, but active changed to once w/o header type
* change, so try a read instead of just deliver.
*/
tcp_recv((tcp_descriptor *) desc, 0);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
}
case INET_REQ_GETSTATUS: {
char tbuf[4];
DEBUGF(("inet_ctl(%ld): GETSTATUS\r\n", (long)desc->port));
put_int32(desc->state, tbuf);
return ctl_reply(INET_REP_OK, tbuf, 4, rbuf, rsize);
}
case INET_REQ_GETTYPE: {
char tbuf[8];
DEBUGF(("inet_ctl(%ld): GETTYPE\r\n", (long)desc->port));
if (desc->sfamily == AF_INET) {
put_int32(INET_AF_INET, &tbuf[0]);
}
#if defined(HAVE_IN6) && defined(AF_INET6)
else if (desc->sfamily == AF_INET6) {
put_int32(INET_AF_INET6, &tbuf[0]);
}
#endif
#ifdef HAVE_SYS_UN_H
else if (desc->sfamily == AF_UNIX) {
put_int32(INET_AF_LOCAL, &tbuf[0]);
}
#endif
else
return ctl_error(EINVAL, rbuf, rsize);
if (desc->stype == SOCK_STREAM) {
put_int32(INET_TYPE_STREAM, &tbuf[4]);
}
else if (desc->stype == SOCK_DGRAM) {
put_int32(INET_TYPE_DGRAM, &tbuf[4]);
}
#ifdef HAVE_SCTP
else if (desc->stype == SOCK_SEQPACKET) {
put_int32(INET_TYPE_SEQPACKET, &tbuf[4]);
}
#endif
else
return ctl_error(EINVAL, rbuf, rsize);
return ctl_reply(INET_REP_OK, tbuf, 8, rbuf, rsize);
}
case INET_REQ_GETFD: {
char tbuf[4];
DEBUGF(("inet_ctl(%ld): GETFD\r\n", (long)desc->port));
if (!IS_OPEN(desc))
return ctl_error(EINVAL, rbuf, rsize);
put_int32((long)desc->s, tbuf);
return ctl_reply(INET_REP_OK, tbuf, 4, rbuf, rsize);
}
case INET_REQ_GETHOSTNAME: { /* get host name */
char tbuf[INET_MAXHOSTNAMELEN + 1];
DEBUGF(("inet_ctl(%ld): GETHOSTNAME\r\n", (long)desc->port));
if (len != 0)
return ctl_error(EINVAL, rbuf, rsize);
/* gethostname requires len to be max(hostname) + 1 */
if (IS_SOCKET_ERROR(sock_hostname(tbuf, INET_MAXHOSTNAMELEN + 1)))
return ctl_error(sock_errno(), rbuf, rsize);
return ctl_reply(INET_REP_OK, tbuf, strlen(tbuf), rbuf, rsize);
}
case INET_REQ_GETPADDRS: {
DEBUGF(("inet_ctl(%ld): INET_GETPADDRS\r\n", (long)desc->port));
if (len != 4) return ctl_error(EINVAL, rbuf, rsize);
if (! IS_OPEN(desc)) return ctl_xerror(EXBADPORT, rbuf, rsize);
#ifdef HAVE_SCTP
if (IS_SCTP(desc) && p_sctp_getpaddrs) {
struct sockaddr *sa;
Uint32 assoc_id;
int n;
ErlDrvSizeT rlen;
assoc_id = get_int32(buf);
n = p_sctp_getpaddrs(desc->s, assoc_id, &sa);
rlen = reply_inet_addrs(n, (inet_address *) sa, rbuf, rsize, 0);
if (n > 0) p_sctp_freepaddrs(sa);
return rlen;
}
#endif
{ /* Fallback to sock_peer */
inet_address addr;
SOCKLEN_T sz;
int i;
sz = sizeof(addr);
i = sock_peer(desc->s, (struct sockaddr *) &addr, &sz);
return reply_inet_addrs(i >= 0 ? 1 : i, &addr, rbuf, rsize, sz);
}
}
case INET_REQ_PEER: { /* get peername */
char tbuf[sizeof(inet_address)];
inet_address peer;
inet_address* ptr;
unsigned int sz;
DEBUGF(("inet_ctl(%ld): PEER\r\n", (long)desc->port));
if (!(desc->state & INET_F_ACTIVE))
return ctl_error(ENOTCONN, rbuf, rsize);
if ((ptr = desc->peer_ptr) != NULL) {
sz = desc->peer_addr_len;
}
else {
ptr = &peer;
sz = sizeof(peer);
sys_memzero((char *) &peer, sz);
if (IS_SOCKET_ERROR
(sock_peer
(desc->s, (struct sockaddr*)ptr, &sz)))
return ctl_error(sock_errno(), rbuf, rsize);
}
if (inet_get_address(tbuf, ptr, &sz) < 0)
return ctl_error(EINVAL, rbuf, rsize);
return ctl_reply(INET_REP_OK, tbuf, sz, rbuf, rsize);
}
case INET_REQ_SETPEER: { /* set fake peername Port Address */
char *xerror;
if (len == 0) {
desc->peer_ptr = NULL;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
else if (len < 2)
return ctl_error(EINVAL, rbuf, rsize);
else if ((xerror = inet_set_faddress
(desc->sfamily, &desc->peer_addr, &buf, &len)) != NULL)
return ctl_xerror(xerror, rbuf, rsize);
else {
desc->peer_ptr = &desc->peer_addr;
desc->peer_addr_len = (SOCKLEN_T) len;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
}
case INET_REQ_GETLADDRS: {
DEBUGF(("inet_ctl(%ld): INET_GETLADDRS\r\n", (long)desc->port));
if (len != 4) return ctl_error(EINVAL, rbuf, rsize);
if (! IS_OPEN(desc)) return ctl_xerror(EXBADPORT, rbuf, rsize);
#ifdef HAVE_SCTP
if (IS_SCTP(desc) && p_sctp_getladdrs) {
struct sockaddr *sa;
Uint32 assoc_id;
int n;
ErlDrvSizeT rlen;
assoc_id = get_int32(buf);
n = p_sctp_getladdrs(desc->s, assoc_id, &sa);
rlen = reply_inet_addrs(n, (inet_address *) sa, rbuf, rsize, 0);
if (n > 0) p_sctp_freeladdrs(sa);
return rlen;
}
#endif
{ /* Fallback to sock_name */
inet_address addr;
SOCKLEN_T sz;
int i;
sz = sizeof(addr);
sys_memzero((char *) &addr, sz);
i = sock_name(desc->s, (struct sockaddr *) &addr, &sz);
return reply_inet_addrs(i >= 0 ? 1 : i, &addr, rbuf, rsize, sz);
}
}
case INET_REQ_NAME: { /* get sockname */
char tbuf[sizeof(inet_address)];
inet_address name;
inet_address* ptr;
unsigned int sz;
DEBUGF(("inet_ctl(%ld): NAME\r\n", (long)desc->port));
if ((ptr = desc->name_ptr) != NULL) {
sz = desc->name_addr_len;
}
else {
ptr = &name;
sz = sizeof(name);
sys_memzero((char *) &name, sz);
if (IS_SOCKET_ERROR
(sock_name(desc->s, (struct sockaddr*)ptr, &sz)))
return ctl_error(sock_errno(), rbuf, rsize);
}
if (inet_get_address(tbuf, ptr, &sz) < 0)
return ctl_error(EINVAL, rbuf, rsize);
return ctl_reply(INET_REP_OK, tbuf, sz, rbuf, rsize);
}
case INET_REQ_SETNAME: { /* set fake sockname Port Address */
char *xerror;
if (len == 0) {
desc->name_ptr = NULL;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
else if (len < 2)
return ctl_error(EINVAL, rbuf, rsize);
else if ((xerror = inet_set_faddress
(desc->sfamily, &desc->name_addr, &buf, &len)) != NULL)
return ctl_xerror(xerror, rbuf, rsize);
else {
desc->name_ptr = &desc->name_addr;
desc->name_addr_len = (SOCKLEN_T) len;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
}
case INET_REQ_BIND: { /* bind socket */
char tbuf[2], *xerror;
inet_address local;
int port;
DEBUGF(("inet_ctl(%ld): BIND\r\n", (long)desc->port));
if (len < 2)
return ctl_error(EINVAL, rbuf, rsize);
if (desc->state != INET_STATE_OPEN)
return ctl_xerror(EXBADPORT, rbuf, rsize);
if ((xerror = inet_set_faddress
(desc->sfamily, &local, &buf, &len)) != NULL)
return ctl_xerror(xerror, rbuf, rsize);
if (IS_SOCKET_ERROR(sock_bind(desc->s,(struct sockaddr*) &local, len)))
return ctl_error(sock_errno(), rbuf, rsize);
desc->state = INET_STATE_OPEN;
port = inet_address_port(&local);
if (port == 0) {
SOCKLEN_T adrlen = sizeof(local);
sys_memzero((char *) &local, adrlen);
sock_name(desc->s, &local.sa, &adrlen);
port = inet_address_port(&local);
}
else if (port == -1) port = 0;
put_int16(sock_ntohs((Uint16) port), tbuf);
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
case INET_REQ_IGNOREFD: {
DEBUGF(("inet_ctl(%ld): IGNOREFD, IGNORED = %d\r\n",
(long)desc->port,(int)*buf));
/*
* FD can only be ignored for connected TCP connections for now,
* possible to add UDP and SCTP support if needed.
*/
if (!IS_CONNECTED(desc))
return ctl_error(ENOTCONN, rbuf, rsize);
if (desc->stype != SOCK_STREAM)
return ctl_error(EINVAL, rbuf, rsize);
if (*buf == 1 && !desc->is_ignored) {
sock_select(desc, (FD_READ|FD_WRITE|FD_CLOSE|ERL_DRV_USE_NO_CALLBACK), 0);
if (desc->active)
desc->is_ignored = INET_IGNORE_READ;
else
desc->is_ignored = INET_IGNORE_PASSIVE;
} else if (*buf == 0 && desc->is_ignored) {
int flags = FD_CLOSE;
if (desc->is_ignored & INET_IGNORE_READ)
flags |= FD_READ;
if (desc->is_ignored & INET_IGNORE_WRITE)
flags |= FD_WRITE;
desc->is_ignored = INET_IGNORE_NONE;
if (flags != FD_CLOSE)
sock_select(desc, flags, 1);
} else
return ctl_error(EINVAL, rbuf, rsize);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
case INET_REQ_GETSERVBYNAME: { /* L1 Name-String L2 Proto-String */
char namebuf[256];
char protobuf[256];
char tbuf[2];
struct servent* srv;
short port;
int n;
if (len < 2)
return ctl_error(EINVAL, rbuf, rsize);
n = get_int8(buf); buf++; len--;
if (n >= len) /* the = sign makes the test inklude next length byte */
return ctl_error(EINVAL, rbuf, rsize);
memcpy(namebuf, buf, n);
namebuf[n] = '\0';
len -= n; buf += n;
n = get_int8(buf); buf++; len--;
if (n > len)
return ctl_error(EINVAL, rbuf, rsize);
memcpy(protobuf, buf, n);
protobuf[n] = '\0';
if ((srv = sock_getservbyname(namebuf, protobuf)) == NULL)
return ctl_error(EINVAL, rbuf, rsize);
port = sock_ntohs(srv->s_port);
put_int16(port, tbuf);
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
case INET_REQ_GETSERVBYPORT: { /* P1 P0 L1 Proto-String */
char protobuf[256];
unsigned short port;
int n;
struct servent* srv;
if (len < 3)
return ctl_error(EINVAL, rbuf, rsize);
port = get_int16(buf);
port = sock_htons(port);
buf += 2;
n = get_int8(buf); buf++; len -= 3;
if (n > len)
return ctl_error(EINVAL, rbuf, rsize);
memcpy(protobuf, buf, n);
protobuf[n] = '\0';
if ((srv = sock_getservbyport(port, protobuf)) == NULL)
return ctl_error(EINVAL, rbuf, rsize);
len = strlen(srv->s_name);
return ctl_reply(INET_REP_OK, srv->s_name, len, rbuf, rsize);
}
default:
return ctl_xerror(EXBADPORT, rbuf, rsize);
}
}
/* update statistics on output packets */
static void inet_output_count(inet_descriptor* desc, ErlDrvSizeT len)
{
unsigned long n = desc->send_cnt + 1;
#ifndef ARCH_64
Uint32 t = desc->send_oct[0] + len;
int c = (t < desc->send_oct[0]);
#endif
double avg = desc->send_avg;
#ifdef ARCH_64
desc->send_oct += len;
#else
/* 64 bit octet count in 32 bit words */
desc->send_oct[0] = t;
desc->send_oct[1] += c;
#endif
if (n == 0) /* WRAP, use old avg as input to a new sequence */
n = 1;
desc->send_avg += (len - avg) / n;
if (len > desc->send_max)
desc->send_max = len;
desc->send_cnt = n;
}
/* update statistics on input packets */
static void inet_input_count(inet_descriptor* desc, ErlDrvSizeT len)
{
unsigned long n = desc->recv_cnt + 1;
#ifndef ARCH_64
Uint32 t = (desc->recv_oct[0] + len);
int c = (t < desc->recv_oct[0]);
#endif
double avg = desc->recv_avg;
double dvi;
#ifdef ARCH_64
desc->recv_oct += len;
#else
/* 64 bit octet count in 32 bit words */
desc->recv_oct[0] = t;
desc->recv_oct[1] += c;
#endif
if (n == 0) /* WRAP */
n = 1;
/* average packet length */
avg = avg + (len - avg) / n;
desc->recv_avg = avg;
if (len > desc->recv_max)
desc->recv_max = len;
/* average deviation from average packet length */
dvi = desc->recv_dvi;
desc->recv_dvi = dvi + ((len - avg) - dvi) / n;
desc->recv_cnt = n;
}
/*----------------------------------------------------------------------------
TCP
-----------------------------------------------------------------------------*/
/*
** Set new size on buffer, used when packet size is determined
** and the buffer is to small.
** buffer must have a size of at least len bytes (counting from ptr_start!)
*/
static int tcp_expand_buffer(tcp_descriptor* desc, int len)
{
ErlDrvBinary* bin;
int offs1;
int offs2;
int used = desc->i_ptr_start - desc->i_buf->orig_bytes;
int ulen = used + len;
if (desc->i_bufsz >= ulen) /* packet will fit */
return 0;
else if (desc->i_buf->orig_size >= ulen) { /* buffer is large enough */
desc->i_bufsz = ulen; /* set "virtual" size */
return 0;
}
DEBUGF(("tcp_expand_buffer(%ld): s=%d, from %ld to %d\r\n",
(long)desc->inet.port, desc->inet.s, desc->i_buf->orig_size, ulen));
offs1 = desc->i_ptr_start - desc->i_buf->orig_bytes;
offs2 = desc->i_ptr - desc->i_ptr_start;
if ((bin = driver_realloc_binary(desc->i_buf, ulen)) == NULL)
return -1;
desc->i_buf = bin;
desc->i_ptr_start = bin->orig_bytes + offs1;
desc->i_ptr = desc->i_ptr_start + offs2;
desc->i_bufsz = ulen;
return 0;
}
/* push data into i_buf */
static int tcp_push_buffer(tcp_descriptor* desc, char* buf, int len)
{
ErlDrvBinary* bin;
if (desc->i_buf == NULL) {
bin = alloc_buffer(len);
sys_memcpy(bin->orig_bytes, buf, len);
desc->i_buf = bin;
desc->i_bufsz = len;
desc->i_ptr_start = desc->i_buf->orig_bytes;
desc->i_ptr = desc->i_ptr_start + len;
}
else {
char* start = desc->i_buf->orig_bytes;
int sz_before = desc->i_ptr_start - start;
int sz_filled = desc->i_ptr - desc->i_ptr_start;
if (len <= sz_before) {
sys_memcpy(desc->i_ptr_start - len, buf, len);
desc->i_ptr_start -= len;
}
else {
bin = alloc_buffer(desc->i_bufsz+len);
sys_memcpy(bin->orig_bytes, buf, len);
sys_memcpy(bin->orig_bytes+len, desc->i_ptr_start, sz_filled);
free_buffer(desc->i_buf);
desc->i_bufsz += len;
desc->i_buf = bin;
desc->i_ptr_start = bin->orig_bytes;
desc->i_ptr = desc->i_ptr_start + sz_filled + len;
}
}
desc->i_remain = 0;
return 0;
}
/* clear CURRENT input buffer */
static void tcp_clear_input(tcp_descriptor* desc)
{
if (desc->i_buf != NULL)
free_buffer(desc->i_buf);
desc->i_buf = NULL;
desc->i_remain = 0;
desc->i_ptr = NULL;
desc->i_ptr_start = NULL;
desc->i_bufsz = 0;
}
/* clear QUEUED output */
static void tcp_clear_output(tcp_descriptor* desc)
{
ErlDrvPort ix = desc->inet.port;
ErlDrvSizeT qsz = driver_sizeq(ix);
driver_deq(ix, qsz);
send_empty_out_q_msgs(INETP(desc));
}
/* Move data so that ptr_start point at buf->orig_bytes */
static void tcp_restart_input(tcp_descriptor* desc)
{
if (desc->i_ptr_start != desc->i_buf->orig_bytes) {
int n = desc->i_ptr - desc->i_ptr_start;
DEBUGF(("tcp_restart_input: move %d bytes\r\n", n));
sys_memmove(desc->i_buf->orig_bytes, desc->i_ptr_start, n);
desc->i_ptr_start = desc->i_buf->orig_bytes;
desc->i_ptr = desc->i_ptr_start + n;
}
}
static int tcp_inet_init(void)
{
DEBUGF(("tcp_inet_init() {}\r\n"));
return 0;
}
/* initialize the TCP descriptor */
static ErlDrvData prep_tcp_inet_start(ErlDrvPort port, char* args)
{
tcp_descriptor* desc;
DEBUGF(("tcp_inet_start(%ld) {\r\n", (long)port));
desc = (tcp_descriptor*)
inet_start(port, sizeof(tcp_descriptor), IPPROTO_TCP);
if (desc == NULL)
return ERL_DRV_ERROR_ERRNO;
desc->high = INET_HIGH_WATERMARK;
desc->low = INET_LOW_WATERMARK;
desc->send_timeout = INET_INFINITY;
desc->send_timeout_close = 0;
desc->busy_on_send = 0;
desc->i_buf = NULL;
desc->i_ptr = NULL;
desc->i_ptr_start = NULL;
desc->i_remain = 0;
desc->i_bufsz = 0;
desc->tcp_add_flags = 0;
desc->http_state = 0;
desc->mtd = NULL;
desc->multi_first = desc->multi_last = NULL;
DEBUGF(("tcp_inet_start(%ld) }\r\n", (long)port));
return (ErlDrvData) desc;
}
static ErlDrvData tcp_inet_start(ErlDrvPort port, char* args)
{
ErlDrvData data = prep_tcp_inet_start(port, args);
set_default_msgq_limits(port);
return data;
}
/* Copy a descriptor, by creating a new port with same settings
* as the descriptor desc.
* return NULL on error (SYSTEM_LIMIT no ports avail)
*/
static tcp_descriptor* tcp_inet_copy(tcp_descriptor* desc,SOCKET s,
ErlDrvTermData owner, int* err)
{
ErlDrvSizeT q_low, q_high;
ErlDrvPort port = desc->inet.port;
tcp_descriptor* copy_desc;
copy_desc = (tcp_descriptor*) prep_tcp_inet_start(port, NULL);
/* Setup event if needed */
if ((copy_desc->inet.s = s) != INVALID_SOCKET) {
if ((copy_desc->inet.event = sock_create_event(INETP(copy_desc))) ==
INVALID_EVENT) {
*err = sock_errno();
FREE(copy_desc);
return NULL;
}
}
/* Some flags must be inherited at this point */
copy_desc->inet.mode = desc->inet.mode;
copy_desc->inet.exitf = desc->inet.exitf;
copy_desc->inet.deliver = desc->inet.deliver;
copy_desc->inet.htype = desc->inet.htype;
copy_desc->inet.psize = desc->inet.psize;
copy_desc->inet.stype = desc->inet.stype;
copy_desc->inet.sfamily = desc->inet.sfamily;
copy_desc->inet.hsz = desc->inet.hsz;
copy_desc->inet.bufsz = desc->inet.bufsz;
copy_desc->high = desc->high;
copy_desc->low = desc->low;
copy_desc->send_timeout = desc->send_timeout;
copy_desc->send_timeout_close = desc->send_timeout_close;
if (desc->tcp_add_flags & TCP_ADDF_SHOW_ECONNRESET)
copy_desc->tcp_add_flags |= TCP_ADDF_SHOW_ECONNRESET;
else
copy_desc->tcp_add_flags &= ~TCP_ADDF_SHOW_ECONNRESET;
/* The new port will be linked and connected to the original caller */
port = driver_create_port(port, owner, "tcp_inet", (ErlDrvData) copy_desc);
if ((long)port == -1) {
*err = INET_ERRNO_SYSTEM_LIMIT;
FREE(copy_desc);
return NULL;
}
/* Read busy msgq limits of parent */
q_low = q_high = ERL_DRV_BUSY_MSGQ_READ_ONLY;
erl_drv_busy_msgq_limits(desc->inet.port, &q_low, &q_high);
/* Write same busy msgq limits to child */
erl_drv_busy_msgq_limits(port, &q_low, &q_high);
copy_desc->inet.port = port;
copy_desc->inet.dport = driver_mk_port(port);
*err = 0;
return copy_desc;
}
/*
** Check Special cases:
** 1. we are a listener doing nb accept -> report error on accept !
** 2. we are doing accept -> restore listener state
*/
static void tcp_close_check(tcp_descriptor* desc)
{
/* XXX:PaN - multiple clients to handle! */
if (desc->inet.state == INET_STATE_ACCEPTING) {
inet_async_op *this_op = desc->inet.opt;
sock_select(INETP(desc), FD_ACCEPT, 0);
desc->inet.state = INET_STATE_LISTENING;
if (this_op != NULL) {
driver_demonitor_process(desc->inet.port, &(this_op->monitor));
}
async_error_am(INETP(desc), am_closed);
}
else if (desc->inet.state == INET_STATE_MULTI_ACCEPTING) {
int id,req;
ErlDrvTermData caller;
ErlDrvMonitor monitor;
sock_select(INETP(desc), FD_ACCEPT, 0);
desc->inet.state = INET_STATE_LISTENING;
while (deq_multi_op(desc,&id,&req,&caller,NULL,&monitor) == 0) {
driver_demonitor_process(desc->inet.port, &monitor);
send_async_error(desc->inet.dport, id, caller, am_closed);
}
clean_multi_timers(&(desc->mtd), desc->inet.port);
}
else if (desc->inet.state == INET_STATE_CONNECTING) {
async_error_am(INETP(desc), am_closed);
}
else if (desc->inet.state == INET_STATE_CONNECTED) {
async_error_am_all(INETP(desc), am_closed);
}
}
/*
** Cleanup & Free
*/
static void tcp_inet_stop(ErlDrvData e)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
DEBUGF(("tcp_inet_stop(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
tcp_close_check(desc);
tcp_clear_input(desc);
DEBUGF(("tcp_inet_stop(%ld) }\r\n", (long)desc->inet.port));
inet_stop(INETP(desc));
}
/* Closes a tcp descriptor without leaving things hanging; the VM keeps trying
* to flush IO queues as long as it contains anything even after the port has
* been closed from the erlang side, which is desired behavior (Think escripts
* writing to files) but pretty hopeless if the underlying fd has been set to
* INVALID_SOCKET through desc_close.
*
* This function should be used in place of desc_close/erl_inet_close in all
* TCP-related operations. Note that this only closes the desc cleanly; it
* will be freed through tcp_inet_stop later on. */
static void tcp_desc_close(tcp_descriptor* desc)
{
#ifdef HAVE_SENDFILE
if(desc->tcp_add_flags & TCP_ADDF_SENDFILE) {
desc->tcp_add_flags &= ~TCP_ADDF_SENDFILE;
close(desc->sendfile.dup_file_fd);
}
#endif
tcp_clear_input(desc);
tcp_clear_output(desc);
erl_inet_close(INETP(desc));
}
/* TCP requests from Erlang */
static ErlDrvSSizeT tcp_inet_ctl(ErlDrvData e, unsigned int cmd,
char* buf, ErlDrvSizeT len,
char** rbuf, ErlDrvSizeT rsize)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
switch(cmd) {
case INET_REQ_OPEN: { /* open socket and return internal index */
int domain;
DEBUGF(("tcp_inet_ctl(%ld): OPEN\r\n", (long)desc->inet.port));
if (len != 2) return ctl_error(EINVAL, rbuf, rsize);
switch(buf[0]) {
case INET_AF_INET:
domain = AF_INET;
break;
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6:
domain = AF_INET6;
break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL:
domain = AF_UNIX;
break;
#endif
default:
return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
if (buf[1] != INET_TYPE_STREAM) return ctl_error(EINVAL, rbuf, rsize);
return inet_ctl_open(INETP(desc), domain, SOCK_STREAM, rbuf, rsize);
break;
}
case INET_REQ_FDOPEN: { /* pass in an open (and optionally bound) socket */
int domain;
int bound;
DEBUGF(("tcp_inet_ctl(%ld): FDOPEN\r\n", (long)desc->inet.port));
if (len != 6 && len != 10) return ctl_error(EINVAL, rbuf, rsize);
switch(buf[0]) {
case INET_AF_INET:
domain = AF_INET;
break;
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6:
domain = AF_INET6;
break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL:
domain = AF_UNIX;
break;
#endif
default:
return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
if (buf[1] != INET_TYPE_STREAM) return ctl_error(EINVAL, rbuf, rsize);
if (len == 6) bound = 1;
else bound = get_int32(buf+2+4);
return inet_ctl_fdopen(INETP(desc), domain, SOCK_STREAM,
(SOCKET) get_int32(buf+2),
bound, rbuf, rsize);
break;
}
case INET_REQ_LISTEN: { /* argument backlog */
int backlog;
DEBUGF(("tcp_inet_ctl(%ld): LISTEN\r\n", (long)desc->inet.port));
if (desc->inet.state == INET_STATE_CLOSED)
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (!IS_OPEN(INETP(desc)))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (len != 2)
return ctl_error(EINVAL, rbuf, rsize);
backlog = get_int16(buf);
if (IS_SOCKET_ERROR(sock_listen(desc->inet.s, backlog)))
return ctl_error(sock_errno(), rbuf, rsize);
desc->inet.state = INET_STATE_LISTENING;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
case INET_REQ_CONNECT: { /* do async connect */
int code;
char tbuf[2], *xerror;
unsigned timeout;
DEBUGF(("tcp_inet_ctl(%ld): CONNECT\r\n", (long)desc->inet.port));
/* INPUT: Timeout(4), Port(2), Address(N) */
if (!IS_OPEN(INETP(desc)))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (IS_CONNECTED(INETP(desc)))
return ctl_error(EISCONN, rbuf, rsize);
if (IS_CONNECTING(INETP(desc)))
return ctl_error(EINVAL, rbuf, rsize);
if (len < 6)
return ctl_error(EINVAL, rbuf, rsize);
timeout = get_int32(buf);
buf += 4;
len -= 4;
if ((xerror = inet_set_faddress
(desc->inet.sfamily, &desc->inet.remote, &buf, &len)) != NULL)
return ctl_xerror(xerror, rbuf, rsize);
code = sock_connect(desc->inet.s,
(struct sockaddr*) &desc->inet.remote, len);
if (IS_SOCKET_ERROR(code) &&
((sock_errno() == ERRNO_BLOCK) || /* Winsock2 */
(sock_errno() == EINPROGRESS))) { /* Unix & OSE!! */
sock_select(INETP(desc), FD_CONNECT, 1);
desc->inet.state = INET_STATE_CONNECTING;
if (timeout != INET_INFINITY)
driver_set_timer(desc->inet.port, timeout);
enq_async(INETP(desc), tbuf, INET_REQ_CONNECT);
}
else if (code == 0) { /* ok we are connected */
desc->inet.state = INET_STATE_CONNECTED;
if (desc->inet.active)
sock_select(INETP(desc), (FD_READ|FD_CLOSE), 1);
enq_async(INETP(desc), tbuf, INET_REQ_CONNECT);
async_ok(INETP(desc));
}
else {
return ctl_error(sock_errno(), rbuf, rsize);
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
case INET_REQ_ACCEPT: { /* do async accept */
char tbuf[2];
unsigned timeout;
inet_address remote;
unsigned int n;
SOCKET s;
DEBUGF(("tcp_inet_ctl(%ld): ACCEPT\r\n", (long)desc->inet.port));
/* INPUT: Timeout(4) */
if ((desc->inet.state != INET_STATE_LISTENING && desc->inet.state != INET_STATE_ACCEPTING &&
desc->inet.state != INET_STATE_MULTI_ACCEPTING) || len != 4) {
return ctl_error(EINVAL, rbuf, rsize);
}
timeout = get_int32(buf);
if (desc->inet.state == INET_STATE_ACCEPTING) {
unsigned long time_left = 0;
int oid = 0;
ErlDrvTermData ocaller = ERL_DRV_NIL;
int oreq = 0;
unsigned otimeout = 0;
ErlDrvTermData caller = driver_caller(desc->inet.port);
MultiTimerData *mtd = NULL,*omtd = NULL;
ErlDrvMonitor monitor, omonitor;
if (driver_monitor_process(desc->inet.port, caller ,&monitor) != 0) {
return ctl_xerror("noproc", rbuf, rsize);
}
deq_async_w_tmo(INETP(desc),&oid,&ocaller,&oreq,&otimeout,&omonitor);
if (otimeout != INET_INFINITY) {
driver_read_timer(desc->inet.port, &time_left);
driver_cancel_timer(desc->inet.port);
if (time_left <= 0) {
time_left = 1;
}
omtd = add_multi_timer(&(desc->mtd), desc->inet.port, ocaller,
time_left, &tcp_inet_multi_timeout);
}
enq_old_multi_op(desc, oid, oreq, ocaller, omtd, &omonitor);
if (timeout != INET_INFINITY) {
mtd = add_multi_timer(&(desc->mtd), desc->inet.port, caller,
timeout, &tcp_inet_multi_timeout);
}
enq_multi_op(desc, tbuf, INET_REQ_ACCEPT, caller, mtd, &monitor);
desc->inet.state = INET_STATE_MULTI_ACCEPTING;
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
} else if (desc->inet.state == INET_STATE_MULTI_ACCEPTING) {
ErlDrvTermData caller = driver_caller(desc->inet.port);
MultiTimerData *mtd = NULL;
ErlDrvMonitor monitor;
if (driver_monitor_process(desc->inet.port, caller ,&monitor) != 0) {
return ctl_xerror("noproc", rbuf, rsize);
}
if (timeout != INET_INFINITY) {
mtd = add_multi_timer(&(desc->mtd), desc->inet.port, caller,
timeout, &tcp_inet_multi_timeout);
}
enq_multi_op(desc, tbuf, INET_REQ_ACCEPT, caller, mtd, &monitor);
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
} else {
n = sizeof(desc->inet.remote);
sys_memzero((char *) &remote, n);
s = sock_accept(desc->inet.s, (struct sockaddr*) &remote, &n);
if (s == INVALID_SOCKET) {
if (sock_errno() == ERRNO_BLOCK) {
ErlDrvMonitor monitor;
if (driver_monitor_process(desc->inet.port, driver_caller(desc->inet.port),
&monitor) != 0) {
return ctl_xerror("noproc", rbuf, rsize);
}
enq_async_w_tmo(INETP(desc), tbuf, INET_REQ_ACCEPT, timeout, &monitor);
desc->inet.state = INET_STATE_ACCEPTING;
sock_select(INETP(desc),FD_ACCEPT,1);
if (timeout != INET_INFINITY) {
driver_set_timer(desc->inet.port, timeout);
}
} else {
return ctl_error(sock_errno(), rbuf, rsize);
}
} else {
ErlDrvTermData caller = driver_caller(desc->inet.port);
tcp_descriptor* accept_desc;
int err;
if ((accept_desc = tcp_inet_copy(desc,s,caller,&err)) == NULL) {
sock_close(s);
return ctl_error(err, rbuf, rsize);
}
/* FIXME: may MUST lock access_port
* 1 - Port is accessible via the erlang:ports()
* 2 - Port is accessible via callers process_info(links)
*/
accept_desc->inet.remote = remote;
SET_NONBLOCKING(accept_desc->inet.s);
#ifdef __WIN32__
driver_select(accept_desc->inet.port, accept_desc->inet.event,
ERL_DRV_READ, 1);
#endif
accept_desc->inet.state = INET_STATE_CONNECTED;
enq_async(INETP(desc), tbuf, INET_REQ_ACCEPT);
async_ok_port(INETP(desc), accept_desc->inet.dport);
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
}
case INET_REQ_CLOSE:
DEBUGF(("tcp_inet_ctl(%ld): CLOSE\r\n", (long)desc->inet.port));
tcp_close_check(desc);
tcp_desc_close(desc);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
case TCP_REQ_RECV: {
unsigned timeout;
char tbuf[2];
int n;
DEBUGF(("tcp_inet_ctl(%ld): RECV (s=%d)\r\n",
(long)desc->inet.port, desc->inet.s));
/* INPUT: Timeout(4), Length(4) */
if (!IS_CONNECTED(INETP(desc))) {
if (desc->tcp_add_flags & TCP_ADDF_DELAYED_CLOSE_RECV) {
desc->tcp_add_flags &= ~(TCP_ADDF_DELAYED_CLOSE_RECV|
TCP_ADDF_DELAYED_CLOSE_SEND);
if (desc->tcp_add_flags & TCP_ADDF_DELAYED_ECONNRESET) {
desc->tcp_add_flags &= ~TCP_ADDF_DELAYED_ECONNRESET;
return ctl_reply(INET_REP_ERROR, "econnreset", 10, rbuf, rsize);
} else
return ctl_reply(INET_REP_ERROR, "closed", 6, rbuf, rsize);
}
return ctl_error(ENOTCONN, rbuf, rsize);
}
if (desc->inet.active || (len != 8))
return ctl_error(EINVAL, rbuf, rsize);
timeout = get_int32(buf);
buf += 4;
n = get_int32(buf);
DEBUGF(("tcp_inet_ctl(%ld) timeout = %d, n = %d\r\n",
(long)desc->inet.port,timeout,n));
if ((desc->inet.htype != TCP_PB_RAW) && (n != 0))
return ctl_error(EINVAL, rbuf, rsize);
if (n > TCP_MAX_PACKET_SIZE)
return ctl_error(ENOMEM, rbuf, rsize);
if (enq_async(INETP(desc), tbuf, TCP_REQ_RECV) < 0)
return ctl_error(EALREADY, rbuf, rsize);
if (INETP(desc)->is_ignored || tcp_recv(desc, n) == 0) {
if (timeout == 0)
async_error_am(INETP(desc), am_timeout);
else {
if (timeout != INET_INFINITY)
driver_set_timer(desc->inet.port, timeout);
if (!INETP(desc)->is_ignored)
sock_select(INETP(desc),(FD_READ|FD_CLOSE),1);
else
INETP(desc)->is_ignored |= INET_IGNORE_READ;
}
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
case TCP_REQ_UNRECV: {
DEBUGF(("tcp_inet_ctl(%ld): UNRECV\r\n", (long)desc->inet.port));
if (!IS_CONNECTED(INETP(desc)))
return ctl_error(ENOTCONN, rbuf, rsize);
tcp_push_buffer(desc, buf, len);
if (desc->inet.active)
tcp_deliver(desc, 0);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
case TCP_REQ_SHUTDOWN: {
int how;
DEBUGF(("tcp_inet_ctl(%ld): FDOPEN\r\n", (long)desc->inet.port));
if (!IS_CONNECTED(INETP(desc))) {
return ctl_error(ENOTCONN, rbuf, rsize);
}
if (len != 1) {
return ctl_error(EINVAL, rbuf, rsize);
}
how = buf[0];
if (how != TCP_SHUT_RD && driver_sizeq(desc->inet.port) > 0) {
if (how == TCP_SHUT_WR) {
desc->tcp_add_flags |= TCP_ADDF_PENDING_SHUT_WR;
} else if (how == TCP_SHUT_RDWR) {
desc->tcp_add_flags |= TCP_ADDF_PENDING_SHUT_RDWR;
}
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
if (IS_SOCKET_ERROR(sock_shutdown(INETP(desc)->s, how))) {
if (how != TCP_SHUT_RD)
desc->tcp_add_flags |= TCP_ADDF_SHUTDOWN_WR_DONE;
return ctl_error(sock_errno(), rbuf, rsize);
} else {
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
}
case TCP_REQ_SENDFILE: {
#ifdef HAVE_SENDFILE
const ErlDrvSizeT required_len =
sizeof(desc->sendfile.dup_file_fd) +
sizeof(Uint64) * 2;
int raw_file_fd;
DEBUGF(("tcp_inet_ctl(%ld): SENDFILE\r\n", (long)desc->inet.port));
if (len != required_len) {
return ctl_error(EINVAL, rbuf, rsize);
} else if (!IS_CONNECTED(INETP(desc))) {
return ctl_error(ENOTCONN, rbuf, rsize);
}
sys_memcpy(&raw_file_fd, buf, sizeof(raw_file_fd));
buf += sizeof(raw_file_fd);
desc->sendfile.dup_file_fd = dup(raw_file_fd);
if(desc->sendfile.dup_file_fd == -1) {
return ctl_error(errno, rbuf, rsize);
}
desc->sendfile.offset = get_int64(buf);
buf += sizeof(Uint64);
desc->sendfile.length = get_int64(buf);
buf += sizeof(Uint64);
ASSERT(desc->sendfile.offset >= 0);
ASSERT(desc->sendfile.length >= 0);
desc->sendfile.ioq_skip = driver_sizeq(desc->inet.port);
desc->sendfile.bytes_sent = 0;
desc->inet.caller = driver_caller(desc->inet.port);
desc->tcp_add_flags |= TCP_ADDF_SENDFILE;
/* See if we can finish sending without selecting & rescheduling. */
tcp_inet_sendfile(desc);
if(desc->sendfile.length > 0) {
sock_select(INETP(desc), FD_WRITE, 1);
}
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
#else
return ctl_error(ENOTSUP, rbuf, rsize);
#endif
}
default:
DEBUGF(("tcp_inet_ctl(%ld): %u\r\n", (long)desc->inet.port, cmd));
return inet_ctl(INETP(desc), cmd, buf, len, rbuf, rsize);
}
}
/*
** tcp_inet_timeout:
** called when timer expire:
** TCP socket may be:
**
** a) receiving -- deselect
** b) connecting -- close socket
** c) accepting -- reset listener
**
*/
static void tcp_inet_timeout(ErlDrvData e)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
int state = desc->inet.state;
DEBUGF(("tcp_inet_timeout(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
if ((state & INET_F_MULTI_CLIENT)) { /* Multi-client always means multi-timers */
fire_multi_timers(&(desc->mtd), desc->inet.port, e);
} else if ((state & INET_STATE_CONNECTED) == INET_STATE_CONNECTED) {
if (desc->busy_on_send) {
ASSERT(IS_BUSY(INETP(desc)));
desc->inet.caller = desc->inet.busy_caller;
desc->inet.state &= ~INET_F_BUSY;
desc->busy_on_send = 0;
set_busy_port(desc->inet.port, 0);
inet_reply_error_am(INETP(desc), am_timeout);
if (desc->send_timeout_close) {
tcp_desc_close(desc);
}
}
else {
/* assume recv timeout */
ASSERT(!desc->inet.active);
sock_select(INETP(desc),(FD_READ|FD_CLOSE),0);
desc->i_remain = 0;
async_error_am(INETP(desc), am_timeout);
}
}
else if ((state & INET_STATE_CONNECTING) == INET_STATE_CONNECTING) {
/* assume connect timeout */
/* close the socket since it's not usable (see man pages) */
tcp_desc_close(desc);
async_error_am(INETP(desc), am_timeout);
}
else if ((state & INET_STATE_ACCEPTING) == INET_STATE_ACCEPTING) {
inet_async_op *this_op = desc->inet.opt;
/* timer is set on accept */
sock_select(INETP(desc), FD_ACCEPT, 0);
if (this_op != NULL) {
driver_demonitor_process(desc->inet.port, &(this_op->monitor));
}
desc->inet.state = INET_STATE_LISTENING;
async_error_am(INETP(desc), am_timeout);
}
DEBUGF(("tcp_inet_timeout(%ld) }\r\n", (long)desc->inet.port));
}
static void tcp_inet_multi_timeout(ErlDrvData e, ErlDrvTermData caller)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
int id,req;
ErlDrvMonitor monitor;
if (remove_multi_op(desc, &id, &req, caller, NULL, &monitor) != 0) {
return;
}
driver_demonitor_process(desc->inet.port, &monitor);
if (desc->multi_first == NULL) {
sock_select(INETP(desc),FD_ACCEPT,0);
desc->inet.state = INET_STATE_LISTENING; /* restore state */
}
send_async_error(desc->inet.dport, id, caller, am_timeout);
}
/*
** command:
** output on a socket only !
** a reply code will be sent to connected (caller later)
** {inet_reply, S, Status}
** NOTE! normal sockets use the the tcp_inet_commandv
** but distribution still uses the tcp_inet_command!!
*/
static void tcp_inet_command(ErlDrvData e, char *buf, ErlDrvSizeT len)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
desc->inet.caller = driver_caller(desc->inet.port);
DEBUGF(("tcp_inet_command(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
if (!IS_CONNECTED(INETP(desc)))
inet_reply_error(INETP(desc), ENOTCONN);
else if (tcp_send(desc, buf, len) == 0)
inet_reply_ok(INETP(desc));
DEBUGF(("tcp_inet_command(%ld) }\r\n", (long)desc->inet.port));
}
static void tcp_inet_commandv(ErlDrvData e, ErlIOVec* ev)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
desc->inet.caller = driver_caller(desc->inet.port);
DEBUGF(("tcp_inet_commanv(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
if (!IS_CONNECTED(INETP(desc))) {
if (desc->tcp_add_flags & TCP_ADDF_DELAYED_CLOSE_SEND) {
desc->tcp_add_flags &= ~TCP_ADDF_DELAYED_CLOSE_SEND;
if (desc->tcp_add_flags & TCP_ADDF_DELAYED_ECONNRESET) {
/* Don't clear flag. Leave it enabled for the next receive
* operation.
*/
inet_reply_error(INETP(desc), ECONNRESET);
} else
inet_reply_error_am(INETP(desc), am_closed);
}
else
inet_reply_error(INETP(desc), ENOTCONN);
}
else if (desc->tcp_add_flags & TCP_ADDF_PENDING_SHUTDOWN)
tcp_shutdown_error(desc, EPIPE);
else if (tcp_sendv(desc, ev) == 0)
inet_reply_ok(INETP(desc));
DEBUGF(("tcp_inet_commandv(%ld) }\r\n", (long)desc->inet.port));
}
static void tcp_inet_flush(ErlDrvData e)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
int discard_output;
/* Discard send queue to avoid hanging port (OTP-7615) */
discard_output = !(desc->inet.event_mask & FD_WRITE);
discard_output |= desc->tcp_add_flags & TCP_ADDF_LINGER_ZERO;
#ifdef HAVE_SENDFILE
/* The old file driver aborted when it was stopped during sendfile, so
* we'll clear the flag and discard all output. */
if(desc->tcp_add_flags & TCP_ADDF_SENDFILE) {
desc->tcp_add_flags &= ~TCP_ADDF_SENDFILE;
close(desc->sendfile.dup_file_fd);
discard_output = 1;
}
#endif
if (discard_output) {
tcp_clear_output(desc);
}
}
static void tcp_inet_process_exit(ErlDrvData e, ErlDrvMonitor *monitorp)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
ErlDrvTermData who = driver_get_monitored_process(desc->inet.port,monitorp);
int state = desc->inet.state;
if ((state & INET_STATE_MULTI_ACCEPTING) == INET_STATE_MULTI_ACCEPTING) {
int id,req;
MultiTimerData *timeout;
if (remove_multi_op(desc, &id, &req, who, &timeout, NULL) != 0) {
return;
}
if (timeout != NULL) {
remove_multi_timer(&(desc->mtd), desc->inet.port, timeout);
}
if (desc->multi_first == NULL) {
sock_select(INETP(desc),FD_ACCEPT,0);
desc->inet.state = INET_STATE_LISTENING; /* restore state */
}
} else if ((state & INET_STATE_ACCEPTING) == INET_STATE_ACCEPTING) {
int did,drid;
ErlDrvTermData dcaller;
deq_async(INETP(desc), &did, &dcaller, &drid);
driver_cancel_timer(desc->inet.port);
sock_select(INETP(desc),FD_ACCEPT,0);
desc->inet.state = INET_STATE_LISTENING; /* restore state */
}
}
static void inet_stop_select(ErlDrvEvent event, void* _)
{
#ifdef __WIN32__
WSACloseEvent((HANDLE)event);
#else
sock_close((SOCKET)(long)event);
#endif
}
/* The peer socket has closed, cleanup and send event */
static int tcp_recv_closed(tcp_descriptor* desc)
{
#ifdef DEBUG
long port = (long) desc->inet.port; /* Used after driver_exit() */
#endif
DEBUGF(("tcp_recv_closed(%ld): s=%d, in %s, line %d\r\n",
port, desc->inet.s, __FILE__, __LINE__));
if (IS_BUSY(INETP(desc))) {
/* A send is blocked */
desc->inet.caller = desc->inet.busy_caller;
tcp_clear_output(desc);
if (desc->busy_on_send) {
driver_cancel_timer(desc->inet.port);
desc->busy_on_send = 0;
DEBUGF(("tcp_recv_closed(%ld): busy on send\r\n", port));
}
desc->inet.state &= ~INET_F_BUSY;
set_busy_port(desc->inet.port, 0);
inet_reply_error_am(INETP(desc), am_closed);
DEBUGF(("tcp_recv_closed(%ld): busy reply 'closed'\r\n", port));
} else {
/* No blocking send op to reply to right now.
* If next op is a send, make sure it returns {error,closed}
* rather than {error,enotconn}.
*/
desc->tcp_add_flags |= TCP_ADDF_DELAYED_CLOSE_SEND;
}
if (!desc->inet.active) {
/* We must cancel any timer here ! */
driver_cancel_timer(desc->inet.port);
/* passive mode do not terminate port ! */
tcp_clear_input(desc);
if (desc->inet.exitf) {
tcp_desc_close(desc);
} else {
desc_close_read(INETP(desc));
}
async_error_am_all(INETP(desc), am_closed);
/* next time EXBADSEQ will be delivered */
DEBUGF(("tcp_recv_closed(%ld): passive reply all 'closed'\r\n", port));
} else {
tcp_clear_input(desc);
tcp_closed_message(desc);
if (desc->inet.exitf) {
driver_exit(desc->inet.port, 0);
} else {
desc_close_read(INETP(desc));
}
DEBUGF(("tcp_recv_closed(%ld): active close\r\n", port));
}
DEBUGF(("tcp_recv_closed(%ld): done\r\n", port));
return -1;
}
/* We have a read error determine the action */
static int tcp_recv_error(tcp_descriptor* desc, int err)
{
if (err != ERRNO_BLOCK) {
if (IS_BUSY(INETP(desc))) {
/* A send is blocked */
desc->inet.caller = desc->inet.busy_caller;
tcp_clear_output(desc);
if (desc->busy_on_send) {
driver_cancel_timer(desc->inet.port);
desc->busy_on_send = 0;
}
desc->inet.state &= ~INET_F_BUSY;
set_busy_port(desc->inet.port, 0);
inet_reply_error_am(INETP(desc), am_closed);
}
if (!desc->inet.active) {
/* We must cancel any timer here ! */
driver_cancel_timer(desc->inet.port);
tcp_clear_input(desc);
if (desc->inet.exitf) {
tcp_desc_close(desc);
} else {
desc_close_read(INETP(desc));
}
async_error_am_all(INETP(desc), error_atom(err));
} else {
tcp_clear_input(desc);
tcp_error_message(desc, err); /* first error */
tcp_closed_message(desc); /* then closed */
if (desc->inet.exitf)
driver_exit(desc->inet.port, err);
else
desc_close_read(INETP(desc));
}
return -1;
}
return 0;
}
/*
** Calculate number of bytes that remain to read before deliver
** Assume buf, ptr_start, ptr has been setup
**
** return > 0 if more to read
** = 0 if holding complete packet
** < 0 on error
**
** if return value == 0 then *len will hold the length of the first packet
** return value > 0 then if *len == 0 then value means upperbound
** *len > 0 then value means exact
**
*/
static int tcp_remain(tcp_descriptor* desc, int* len)
{
char* ptr = desc->i_ptr_start;
int nfill = (desc->i_ptr - desc->i_buf->orig_bytes); /* filled */
int nsz = desc->i_bufsz - nfill; /* remain */
int n = desc->i_ptr - ptr; /* number of bytes read */
int tlen;
tlen = packet_get_length(desc->inet.htype, ptr, n,
desc->inet.psize, desc->i_bufsz,
desc->inet.delimiter, &desc->http_state);
DEBUGF(("tcp_remain(%ld): s=%d, n=%d, nfill=%d nsz=%d, tlen %d\r\n",
(long)desc->inet.port, desc->inet.s, n, nfill, nsz, tlen));
if (tlen > 0) {
if (tlen <= n) { /* got a packet */
*len = tlen;
DEBUGF((" => nothing remain packet=%d\r\n", tlen));
return 0;
}
else { /* need known more */
if (tcp_expand_buffer(desc, tlen) < 0)
return -1;
*len = tlen - n;
DEBUGF((" => remain=%d\r\n", *len));
return *len;
}
}
else if (tlen == 0) { /* need unknown more */
*len = 0;
if (nsz == 0) {
if (nfill == n) {
if (desc->inet.psize != 0 && desc->inet.psize > nfill) {
if (tcp_expand_buffer(desc, desc->inet.psize) < 0)
return -1;
return desc->inet.psize;
}
else
goto error;
}
DEBUGF((" => restart more=%d\r\n", nfill - n));
return nfill - n;
}
else {
DEBUGF((" => more=%d \r\n", nsz));
return nsz;
}
}
error:
DEBUGF((" => packet error\r\n"));
return -1;
}
/*
** Deliver all packets ready
** if len == 0 then check start with a check for ready packet
*/
static int tcp_deliver(tcp_descriptor* desc, int len)
{
int count = 0;
int n;
/* Poll for ready packet */
if (len == 0) {
/* empty buffer or waiting for more input */
if ((desc->i_buf == NULL) || (desc->i_remain > 0))
return count;
if ((n = tcp_remain(desc, &len)) != 0) {
if (n < 0) /* packet error */
return n;
if (len > 0) /* more data pending */
desc->i_remain = len;
return count;
}
}
while (len > 0) {
int code;
inet_input_count(INETP(desc), len);
/* deliver binary? */
if (len*4 >= desc->i_buf->orig_size*3) { /* >=75% */
code = tcp_reply_binary_data(desc, desc->i_buf,
(desc->i_ptr_start -
desc->i_buf->orig_bytes),
len);
if (code < 0)
return code;
/* something after? */
if (desc->i_ptr_start + len == desc->i_ptr) { /* no */
tcp_clear_input(desc);
}
else { /* move trail to beginning of a new buffer */
ErlDrvBinary* bin = alloc_buffer(desc->i_bufsz);
char* ptr_end = desc->i_ptr_start + len;
int sz = desc->i_ptr - ptr_end;
memcpy(bin->orig_bytes, ptr_end, sz);
free_buffer(desc->i_buf);
desc->i_buf = bin;
desc->i_ptr_start = desc->i_buf->orig_bytes;
desc->i_ptr = desc->i_ptr_start + sz;
desc->i_remain = 0;
}
}
else {
code = tcp_reply_data(desc, desc->i_ptr_start, len);
/* XXX The buffer gets thrown away on error (code < 0) */
/* Windows needs workaround for this in tcp_inet_event... */
if (code < 0)
return code;
desc->i_ptr_start += len;
if (desc->i_ptr_start == desc->i_ptr)
tcp_clear_input(desc);
else
desc->i_remain = 0;
}
count++;
len = 0;
if (!desc->inet.active) {
if (!desc->busy_on_send) {
driver_cancel_timer(desc->inet.port);
}
sock_select(INETP(desc),(FD_READ|FD_CLOSE),0);
if (desc->i_buf != NULL)
tcp_restart_input(desc);
}
else if (desc->i_buf != NULL) {
if ((n = tcp_remain(desc, &len)) != 0) {
if (n < 0) /* packet error */
return n;
tcp_restart_input(desc);
if (len > 0)
desc->i_remain = len;
len = 0;
}
}
}
return count;
}
static int tcp_recv(tcp_descriptor* desc, int request_len)
{
int n;
int len;
int nread;
if (desc->i_buf == NULL) { /* allocte a read buffer */
int sz = (request_len > 0) ? request_len : desc->inet.bufsz;
if ((desc->i_buf = alloc_buffer(sz)) == NULL)
return -1;
/* XXX: changing bufsz during recv SHOULD/MAY? affect
* ongoing operation but is not now
*/
desc->i_bufsz = sz; /* use i_bufsz not i_buf->orig_size ! */
desc->i_ptr_start = desc->i_buf->orig_bytes;
desc->i_ptr = desc->i_ptr_start;
nread = sz;
if (request_len > 0)
desc->i_remain = request_len;
else
desc->i_remain = 0;
}
else if (request_len > 0) { /* we have a data in buffer and a request */
n = desc->i_ptr - desc->i_ptr_start;
if (n >= request_len)
return tcp_deliver(desc, request_len);
else if (tcp_expand_buffer(desc, request_len) < 0)
return tcp_recv_error(desc, ENOMEM);
else
desc->i_remain = nread = request_len - n;
}
else if (desc->i_remain == 0) { /* poll remain from buffer data */
if ((nread = tcp_remain(desc, &len)) < 0)
return tcp_recv_error(desc, EMSGSIZE);
else if (nread == 0)
return tcp_deliver(desc, len);
else if (len > 0)
desc->i_remain = len; /* set remain */
}
else /* remain already set use it */
nread = desc->i_remain;
DEBUGF(("tcp_recv(%ld): s=%d about to read %d bytes...\r\n",
(long)desc->inet.port, desc->inet.s, nread));
n = sock_recv(desc->inet.s, desc->i_ptr, nread, 0);
if (IS_SOCKET_ERROR(n)) {
int err = sock_errno();
if (err == ECONNRESET) {
DEBUGF((" => detected close (connreset)\r\n"));
if (desc->tcp_add_flags & TCP_ADDF_SHOW_ECONNRESET)
return tcp_recv_error(desc, err);
else
return tcp_recv_closed(desc);
}
if (err == ERRNO_BLOCK) {
DEBUGF((" => would block\r\n"));
return 0;
}
else {
DEBUGF((" => error: %d\r\n", err));
return tcp_recv_error(desc, err);
}
}
else if (n == 0) {
DEBUGF((" => detected close\r\n"));
return tcp_recv_closed(desc);
}
DEBUGF((" => got %d bytes\r\n", n));
desc->i_ptr += n;
if (desc->i_remain > 0) {
desc->i_remain -= n;
if (desc->i_remain == 0)
return tcp_deliver(desc, desc->i_ptr - desc->i_ptr_start);
}
else {
if ((nread = tcp_remain(desc, &len)) < 0)
return tcp_recv_error(desc, EMSGSIZE);
else if (nread == 0)
return tcp_deliver(desc, len);
else if (len > 0)
desc->i_remain = len; /* set remain */
}
return 0;
}
#ifdef __WIN32__
static int winsock_event_select(inet_descriptor *desc, int flags, int on)
{
int save_event_mask = desc->event_mask;
desc->forced_events = 0;
if (on)
desc->event_mask |= flags;
else
desc->event_mask &= (~flags);
DEBUGF(("port %d: winsock_event_select: "
"flags=%02X, on=%d, event_mask=%02X\n",
desc->port, flags, on, desc->event_mask));
/* The RIGHT WAY (TM) to do this is to make sure:
A) The cancelling of all network events is done with
NULL as the event parameter (bug in NT's winsock),
B) The actual event handle is reset so that it is only
raised if one of the requested network events is active,
C) Avoid race conditions by making sure that the event cannot be set
while we are preparing to set the correct network event mask.
The simplest way to do it is to turn off all events, reset the
event handle and then, if event_mask != 0, turn on the appropriate
events again. */
if (WSAEventSelect(desc->s, NULL, 0) != 0) {
DEBUGF(("port %d: winsock_event_select: "
"WSAEventSelect returned error, code %d.\n",
sock_errno()));
desc->event_mask = save_event_mask;
return -1;
}
if (!ResetEvent(desc->event)) {
DEBUGF(("port %d: winsock_event_select: "
"ResetEvent returned error, code %d.\n",
GetLastError()));
desc->event_mask = 0;
return -1;
}
if (desc->event_mask != 0) {
if (WSAEventSelect(desc->s,
desc->event,
desc->event_mask) != 0) {
DEBUGF(("port %d: winsock_event_select: "
"WSAEventSelect returned error, code %d.\n",
sock_errno()));
desc->event_mask = 0;
return -1;
}
/* Now, WSAEventSelect() is trigged only when the queue goes from
full to empty or from empty to full; therefore we need an extra test
to see whether it is writeable, readable or closed... */
if ((desc->event_mask & FD_WRITE)) {
int do_force = 1;
if (desc->send_would_block) {
TIMEVAL tmo = {0,0};
FD_SET fds;
int ret;
FD_ZERO(&fds);
FD_SET(desc->s,&fds);
do_force = (select(desc->s+1,0,&fds,0,&tmo) > 0);
}
if (do_force) {
SetEvent(desc->event);
desc->forced_events |= FD_WRITE;
}
}
if ((desc->event_mask & (FD_READ|FD_CLOSE))) {
int readable = 0;
int closed = 0;
TIMEVAL tmo = {0,0};
FD_SET fds;
int ret;
unsigned long arg;
FD_ZERO(&fds);
FD_SET(desc->s,&fds);
ret = select(desc->s+1,&fds,0,0,&tmo);
if (ret > 0) {
++readable;
if (ioctlsocket(desc->s,FIONREAD,&arg) != 0) {
++closed; /* Which gives a FD_CLOSE event */
} else {
closed = (arg == 0);
}
}
if ((desc->event_mask & FD_READ) && readable && !closed) {
SetEvent(desc->event);
desc->forced_events |= FD_READ;
}
if ((desc->event_mask & FD_CLOSE) && closed) {
SetEvent(desc->event);
desc->forced_events |= FD_CLOSE;
}
}
}
return 0;
}
static void tcp_inet_event(ErlDrvData e, ErlDrvEvent event)
{
tcp_descriptor* desc = (tcp_descriptor*)e;
WSANETWORKEVENTS netEv;
int err;
DEBUGF(("tcp_inet_event(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
if (WSAEnumNetworkEvents(desc->inet.s, desc->inet.event,
&netEv) != 0) {
DEBUGF((" => EnumNetworkEvents = %d\r\n", sock_errno() ));
goto error;
}
DEBUGF((" => event=%02X, mask=%02X\r\n",
netEv.lNetworkEvents, desc->inet.event_mask));
/* Add the forced events. */
netEv.lNetworkEvents |= desc->inet.forced_events;
/*
* Calling WSAEventSelect() with a mask of 0 doesn't always turn off
* all events. To avoid acting on events we don't want, we mask
* the events with mask for the events we really want.
*/
#ifdef DEBUG
if ((netEv.lNetworkEvents & ~(desc->inet.event_mask)) != 0) {
DEBUGF(("port %d: ... unexpected event: %d\r\n",
desc->inet.port, netEv.lNetworkEvents & ~(desc->inet.event_mask)));
}
#endif
netEv.lNetworkEvents &= desc->inet.event_mask;
if (netEv.lNetworkEvents & FD_READ) {
if (tcp_inet_input(desc, event) < 0) {
goto error;
}
if (netEv.lNetworkEvents & FD_CLOSE) {
/*
* We must loop to read out the remaining packets (if any).
*/
for (;;) {
DEBUGF(("Retrying read due to closed port\r\n"));
/* XXX The buffer will be thrown away on error (empty que).
Possible SMP FIXME. */
if (!desc->inet.active && (desc->inet.opt) == NULL) {
goto error;
}
if (tcp_inet_input(desc, event) < 0) {
goto error;
}
}
}
}
if (netEv.lNetworkEvents & FD_WRITE) {
desc->inet.send_would_block = 0;
if (tcp_inet_output(desc, event) < 0)
goto error;
}
if (netEv.lNetworkEvents & FD_CONNECT) {
if ((err = netEv.iErrorCode[FD_CONNECT_BIT]) != 0) {
async_error(INETP(desc), err);
} else {
tcp_inet_output(desc, event);
}
} else if (netEv.lNetworkEvents & FD_ACCEPT) {
if ((err = netEv.iErrorCode[FD_ACCEPT_BIT]) != 0)
async_error(INETP(desc), err);
else
tcp_inet_input(desc, event);
}
if (netEv.lNetworkEvents & FD_CLOSE) {
/* error in err = netEv.iErrorCode[FD_CLOSE_BIT] */
DEBUGF(("Detected close in %s, line %d\r\n", __FILE__, __LINE__));
if (desc->tcp_add_flags & TCP_ADDF_SHOW_ECONNRESET) {
err = netEv.iErrorCode[FD_CLOSE_BIT];
if (err == ECONNRESET)
tcp_recv_error(desc, err);
else if (err == ECONNABORTED && IS_CONNECTED(INETP(desc))) {
/* translate this error to ECONNRESET */
tcp_recv_error(desc, ECONNRESET);
}
else
tcp_recv_closed(desc);
}
else
tcp_recv_closed(desc);
}
DEBUGF(("tcp_inet_event(%ld) }\r\n", (long)desc->inet.port));
return;
error:
DEBUGF(("tcp_inet_event(%ld) error}\r\n", (long)desc->inet.port));
return;
}
#endif /* __WIN32__ */
/* socket has input:
** 1. INET_STATE_ACCEPTING => non block accept ?
** 2. INET_STATE_CONNECTED => read input
*/
static int tcp_inet_input(tcp_descriptor* desc, HANDLE event)
{
int ret = 0;
#ifdef DEBUG
long port = (long) desc->inet.port; /* Used after driver_exit() */
#endif
ASSERT(!INETP(desc)->is_ignored);
DEBUGF(("tcp_inet_input(%ld) {s=%d\r\n", port, desc->inet.s));
/* XXX fprintf(stderr,"tcp_inet_input(%ld) {s=%d}\r\n",(long) desc->inet.port, desc->inet.s); */
if (desc->inet.state == INET_STATE_ACCEPTING) {
SOCKET s;
unsigned int len;
inet_address remote;
inet_async_op *this_op = desc->inet.opt;
len = sizeof(desc->inet.remote);
sys_memzero((char *) &remote, len);
s = sock_accept(desc->inet.s, (struct sockaddr*) &remote, &len);
if (s == INVALID_SOCKET && sock_errno() == ERRNO_BLOCK) {
/* Just try again, no real error, just a ghost trigger from poll,
keep the default return code and everything else as is */
goto done;
}
sock_select(INETP(desc),FD_ACCEPT,0);
desc->inet.state = INET_STATE_LISTENING; /* restore state */
if (this_op != NULL) {
driver_demonitor_process(desc->inet.port, &(this_op->monitor));
}
driver_cancel_timer(desc->inet.port); /* posssibly cancel a timer */
if (s == INVALID_SOCKET) {
ret = async_error(INETP(desc), sock_errno());
goto done;
}
else {
ErlDrvTermData caller;
tcp_descriptor* accept_desc;
int err;
if (desc->inet.opt == NULL) {
/* No caller setup */
sock_close(s);
ret = async_error(INETP(desc), EINVAL);
goto done;
}
caller = desc->inet.opt->caller;
if ((accept_desc = tcp_inet_copy(desc,s,caller,&err)) == NULL) {
sock_close(s);
ret = async_error(INETP(desc), err);
goto done;
}
/* FIXME: may MUST lock port
* 1 - Port is accessible via the erlang:ports()
* 2 - Port is accessible via callers process_info(links)
*/
accept_desc->inet.remote = remote;
SET_NONBLOCKING(accept_desc->inet.s);
#ifdef __WIN32__
driver_select(accept_desc->inet.port, accept_desc->inet.event,
ERL_DRV_READ, 1);
#endif
accept_desc->inet.state = INET_STATE_CONNECTED;
ret = async_ok_port(INETP(desc), accept_desc->inet.dport);
goto done;
}
} else if (desc->inet.state == INET_STATE_MULTI_ACCEPTING) {
SOCKET s;
unsigned int len;
inet_address remote;
int id,req;
ErlDrvTermData caller;
MultiTimerData *timeout;
ErlDrvMonitor monitor;
#ifdef HARDDEBUG
int times = 0;
#endif
while (desc->inet.state == INET_STATE_MULTI_ACCEPTING) {
len = sizeof(desc->inet.remote);
sys_memzero((char *) &remote, len);
s = sock_accept(desc->inet.s, (struct sockaddr*) &remote, &len);
if (s == INVALID_SOCKET && sock_errno() == ERRNO_BLOCK) {
/* Just try again, no real error, keep the last return code */
goto done;
}
#ifdef HARDDEBUG
if (++times > 1) {
erts_fprintf(stderr,"Accepts in one suite: %d :-)\r\n",times);
}
#endif
if (deq_multi_op(desc,&id,&req,&caller,&timeout,&monitor) != 0) {
ret = -1;
goto done;
}
if (desc->multi_first == NULL) {
sock_select(INETP(desc),FD_ACCEPT,0);
desc->inet.state = INET_STATE_LISTENING; /* restore state */
}
if (timeout != NULL) {
remove_multi_timer(&(desc->mtd), desc->inet.port, timeout);
}
driver_demonitor_process(desc->inet.port, &monitor);
if (s == INVALID_SOCKET) { /* Not ERRNO_BLOCK, that's handled right away */
ret = send_async_error(desc->inet.dport,
id, caller, error_atom(sock_errno()));
goto done;
}
else {
tcp_descriptor* accept_desc;
int err;
if ((accept_desc = tcp_inet_copy(desc,s,caller,&err)) == NULL) {
sock_close(s);
ret = send_async_error(desc->inet.dport,
id, caller, error_atom(err));
goto done;
}
accept_desc->inet.remote = remote;
SET_NONBLOCKING(accept_desc->inet.s);
#ifdef __WIN32__
driver_select(accept_desc->inet.port, accept_desc->inet.event,
ERL_DRV_READ, 1);
#endif
accept_desc->inet.state = INET_STATE_CONNECTED;
ret = send_async_ok_port(desc->inet.dport,
id, caller, accept_desc->inet.dport);
}
}
}
else if (IS_CONNECTED(INETP(desc))) {
ret = tcp_recv(desc, 0);
goto done;
}
else {
/* maybe a close op from connection attempt?? */
sock_select(INETP(desc),FD_ACCEPT,0);
DEBUGF(("tcp_inet_input(%ld): s=%d bad state: %04x\r\n",
port, desc->inet.s, desc->inet.state));
}
done:
DEBUGF(("tcp_inet_input(%ld) }\r\n", port));
return ret;
}
static int tcp_send_or_shutdown_error(tcp_descriptor* desc, int err)
{
int show_econnreset = (err == ECONNRESET
&& desc->tcp_add_flags & TCP_ADDF_SHOW_ECONNRESET);
/*
* If the port is busy, we must do some clean-up before proceeding.
*/
if (IS_BUSY(INETP(desc))) {
desc->inet.caller = desc->inet.busy_caller;
if (desc->busy_on_send) {
driver_cancel_timer(desc->inet.port);
desc->busy_on_send = 0;
}
desc->inet.state &= ~INET_F_BUSY;
set_busy_port(desc->inet.port, 0);
}
/*
* We used to handle "expected errors" differently from unexpected ones.
* Now we handle all errors in the same way (unless the show_econnreset
* socket option is enabled). We just have to distinguish between passive
* and active sockets.
*/
DEBUGF(("driver_failure_eof(%ld) in %s, line %d\r\n",
(long)desc->inet.port, __FILE__, __LINE__));
if (desc->inet.active) {
if (show_econnreset) {
tcp_error_message(desc, err);
tcp_closed_message(desc);
inet_reply_error(INETP(desc), err);
} else {
tcp_closed_message(desc);
inet_reply_error_am(INETP(desc), am_closed);
}
if (desc->inet.exitf)
driver_exit(desc->inet.port, 0);
else
tcp_desc_close(desc);
} else {
tcp_close_check(desc);
tcp_desc_close(desc);
if (desc->inet.caller) {
if (show_econnreset)
inet_reply_error(INETP(desc), err);
else
inet_reply_error_am(INETP(desc), am_closed);
}
else {
/* No blocking send op to reply to right now.
* If next op is a send, make sure it returns {error,closed}
* rather than {error,enotconn}.
*/
desc->tcp_add_flags |= TCP_ADDF_DELAYED_CLOSE_SEND;
}
/*
* Make sure that the next receive operation gets an {error,closed}
* result rather than {error,enotconn}. That means that the caller
* can safely ignore errors in the send operations and handle them
* in the receive operation.
*/
desc->tcp_add_flags |= TCP_ADDF_DELAYED_CLOSE_RECV;
if (show_econnreset) {
/* Return {error, econnreset} instead of {error, closed}
* on send or receive operations.
*/
desc->tcp_add_flags |= TCP_ADDF_DELAYED_ECONNRESET;
}
}
return -1;
}
static int tcp_send_error(tcp_descriptor* desc, int err)
{
/* EPIPE errors usually occur in one of three ways:
* 1. We write to a socket when we've already shutdown() the write side. On
* Windows the error returned for this is ESHUTDOWN rather than EPIPE.
* 2. The TCP peer sends us an RST through no fault of our own (perhaps
* by aborting the connection using SO_LINGER) and we then attempt
* to write to the socket. On Linux and Windows we would actually
* receive an ECONNRESET error for this, but on the BSDs, Darwin,
* Illumos and presumably Solaris, it's an EPIPE.
* 3. We cause the TCP peer to send us an RST by writing to a socket
* after we receive a FIN from them. Our first write will be
* successful, but if the they have closed the connection (rather
* than just shutting down the write side of it) this will cause their
* OS to send us an RST. Then, when we attempt to write to the socket
* a second time, we will get an EPIPE error. On Windows we get an
* ECONNABORTED.
*
* What we are going to do here is to treat all EPIPE messages that aren't
* of type 1 as ECONNRESET errors. This will allow users who have the
* show_econnreset socket option enabled to receive {error, econnreset} on
* both send and recv operations to indicate that an RST has been received.
*/
#ifdef __WIN_32__
if (err == ECONNABORTED)
err = ECONNRESET;
#endif
if (err == EPIPE && !(desc->tcp_add_flags & TCP_ADDF_SHUTDOWN_WR_DONE))
err = ECONNRESET;
return tcp_send_or_shutdown_error(desc, err);
}
static int tcp_shutdown_error(tcp_descriptor* desc, int err)
{
return tcp_send_or_shutdown_error(desc, err);
}
/*
** Send non-blocking vector data
*/
static int tcp_sendv(tcp_descriptor* desc, ErlIOVec* ev)
{
ErlDrvSizeT sz;
char buf[4];
ErlDrvSizeT h_len;
ssize_t n;
ErlDrvPort ix = desc->inet.port;
ErlDrvSizeT len = ev->size;
switch(desc->inet.htype) {
case TCP_PB_1:
put_int8(len, buf);
h_len = 1;
break;
case TCP_PB_2:
put_int16(len, buf);
h_len = 2;
break;
case TCP_PB_4:
put_int32(len, buf);
h_len = 4;
break;
default:
if (len == 0)
return 0;
h_len = 0;
break;
}
inet_output_count(INETP(desc), len+h_len);
if (h_len > 0) {
ev->iov[0].iov_base = buf;
ev->iov[0].iov_len = h_len;
ev->size += h_len;
}
sz = driver_sizeq(ix);
if ((desc->tcp_add_flags & TCP_ADDF_SENDFILE) || sz > 0) {
driver_enqv(ix, ev, 0);
if (sz+ev->size >= desc->high) {
DEBUGF(("tcp_sendv(%ld): s=%d, sender forced busy\r\n",
(long)desc->inet.port, desc->inet.s));
desc->inet.state |= INET_F_BUSY; /* mark for low-watermark */
desc->inet.busy_caller = desc->inet.caller;
set_busy_port(desc->inet.port, 1);
if (desc->send_timeout != INET_INFINITY) {
desc->busy_on_send = 1;
driver_set_timer(desc->inet.port, desc->send_timeout);
}
return 1;
}
}
else {
int vsize = (ev->vsize > MAX_VSIZE) ? MAX_VSIZE : ev->vsize;
DEBUGF(("tcp_sendv(%ld): s=%d, about to send "LLU","LLU" bytes\r\n",
(long)desc->inet.port, desc->inet.s, (llu_t)h_len, (llu_t)len));
if (INETP(desc)->is_ignored) {
INETP(desc)->is_ignored |= INET_IGNORE_WRITE;
n = 0;
} else if (desc->tcp_add_flags & TCP_ADDF_DELAY_SEND) {
n = 0;
} else if (IS_SOCKET_ERROR(sock_sendv(desc->inet.s, ev->iov,
vsize, &n, 0))) {
if ((sock_errno() != ERRNO_BLOCK) && (sock_errno() != EINTR)) {
int err = sock_errno();
DEBUGF(("tcp_sendv(%ld): s=%d, "
"sock_sendv(size=2) errno = %d\r\n",
(long)desc->inet.port, desc->inet.s, err));
return tcp_send_error(desc, err);
}
#ifdef __WIN32__
desc->inet.send_would_block = 1;
#endif
n = 0;
}
else if (n == ev->size) {
ASSERT(NO_SUBSCRIBERS(&INETP(desc)->empty_out_q_subs));
return 0;
}
else {
DEBUGF(("tcp_sendv(%ld): s=%d, only sent "
LLU"/%d of "LLU"/%d bytes/items\r\n",
(long)desc->inet.port, desc->inet.s,
(llu_t)n, vsize, (llu_t)ev->size, ev->vsize));
}
DEBUGF(("tcp_sendv(%ld): s=%d, Send failed, queuing\r\n",
(long)desc->inet.port, desc->inet.s));
driver_enqv(ix, ev, n);
if (!INETP(desc)->is_ignored)
sock_select(INETP(desc),(FD_WRITE|FD_CLOSE), 1);
}
return 0;
}
/*
** Send non blocking data
*/
static int tcp_send(tcp_descriptor* desc, char* ptr, ErlDrvSizeT len)
{
int sz;
char buf[4];
int h_len;
int n;
ErlDrvPort ix = desc->inet.port;
SysIOVec iov[2];
switch(desc->inet.htype) {
case TCP_PB_1:
put_int8(len, buf);
h_len = 1;
break;
case TCP_PB_2:
put_int16(len, buf);
h_len = 2;
break;
case TCP_PB_4:
put_int32(len, buf);
h_len = 4;
break;
default:
if (len == 0)
return 0;
h_len = 0;
break;
}
inet_output_count(INETP(desc), len+h_len);
sz = driver_sizeq(ix);
if ((desc->tcp_add_flags & TCP_ADDF_SENDFILE) || sz > 0) {
if (h_len > 0)
driver_enq(ix, buf, h_len);
driver_enq(ix, ptr, len);
if (sz+h_len+len >= desc->high) {
DEBUGF(("tcp_send(%ld): s=%d, sender forced busy\r\n",
(long)desc->inet.port, desc->inet.s));
desc->inet.state |= INET_F_BUSY; /* mark for low-watermark */
desc->inet.busy_caller = desc->inet.caller;
set_busy_port(desc->inet.port, 1);
if (desc->send_timeout != INET_INFINITY) {
desc->busy_on_send = 1;
driver_set_timer(desc->inet.port, desc->send_timeout);
}
return 1;
}
}
else {
iov[0].iov_base = buf;
iov[0].iov_len = h_len;
iov[1].iov_base = ptr;
iov[1].iov_len = len;
DEBUGF(("tcp_send(%ld): s=%d, about to send "LLU","LLU" bytes\r\n",
(long)desc->inet.port, desc->inet.s, (llu_t)h_len, (llu_t)len));
if (INETP(desc)->is_ignored) {
INETP(desc)->is_ignored |= INET_IGNORE_WRITE;
n = 0;
} else if (desc->tcp_add_flags & TCP_ADDF_DELAY_SEND) {
sock_send(desc->inet.s, buf, 0, 0);
n = 0;
} else if (IS_SOCKET_ERROR(sock_sendv(desc->inet.s,iov,2,&n,0))) {
if ((sock_errno() != ERRNO_BLOCK) && (sock_errno() != EINTR)) {
int err = sock_errno();
DEBUGF(("tcp_send(%ld): s=%d,sock_sendv(size=2) errno = %d\r\n",
(long)desc->inet.port, desc->inet.s, err));
return tcp_send_error(desc, err);
}
#ifdef __WIN32__
desc->inet.send_would_block = 1;
#endif
n = 0;
}
else if (n == len+h_len) {
ASSERT(NO_SUBSCRIBERS(&INETP(desc)->empty_out_q_subs));
return 0;
}
DEBUGF(("tcp_send(%ld): s=%d, Send failed, queuing",
(long)desc->inet.port, desc->inet.s));
if (n < h_len) {
driver_enq(ix, buf+n, h_len-n);
driver_enq(ix, ptr, len);
}
else {
n -= h_len;
driver_enq(ix, ptr+n, len-n);
}
if (!INETP(desc)->is_ignored)
sock_select(INETP(desc),(FD_WRITE|FD_CLOSE), 1);
}
return 0;
}
/* shutdown on the socket:
** Assume caller has confirmed TCP_ADDF_PENDING_SHUTDOWN is set.
*/
static void tcp_shutdown_async(tcp_descriptor* desc)
{
int how;
how = (desc->tcp_add_flags & TCP_ADDF_PENDING_SHUT_WR) ?
TCP_SHUT_WR : TCP_SHUT_RDWR;
if (IS_SOCKET_ERROR(sock_shutdown(INETP(desc)->s, how)))
tcp_shutdown_error(desc, sock_errno());
else
desc->tcp_add_flags |= TCP_ADDF_SHUTDOWN_WR_DONE;
}
static void tcp_inet_drv_output(ErlDrvData data, ErlDrvEvent event)
{
(void)tcp_inet_output((tcp_descriptor*)data, (HANDLE)event);
}
static void tcp_inet_drv_input(ErlDrvData data, ErlDrvEvent event)
{
(void)tcp_inet_input((tcp_descriptor*)data, (HANDLE)event);
}
#ifdef HAVE_SENDFILE
static int tcp_sendfile_completed(tcp_descriptor* desc) {
ErlDrvTermData spec[LOAD_PORT_CNT + LOAD_TUPLE_CNT * 2 +
LOAD_ATOM_CNT * 2 + LOAD_UINT_CNT * 2];
Uint32 sent_low, sent_high;
int i;
desc->tcp_add_flags &= ~TCP_ADDF_SENDFILE;
close(desc->sendfile.dup_file_fd);
/* While we flushed the output queue prior to sending the file, we've
* deferred clearing busy status until now as there's no point in doing so
* while we still have a file to send.
*
* The watermark is checked since more data may have been added while we
* were sending the file. */
if (driver_sizeq(desc->inet.port) <= desc->low) {
if (IS_BUSY(INETP(desc))) {
desc->inet.caller = desc->inet.busy_caller;
desc->inet.state &= ~INET_F_BUSY;
set_busy_port(desc->inet.port, 0);
/* if we have a timer then cancel and send ok to client */
if (desc->busy_on_send) {
driver_cancel_timer(desc->inet.port);
desc->busy_on_send = 0;
}
inet_reply_ok(INETP(desc));
}
}
if (driver_sizeq(desc->inet.port) == 0) {
sock_select(INETP(desc), FD_WRITE, 0);
send_empty_out_q_msgs(INETP(desc));
if (desc->tcp_add_flags & TCP_ADDF_PENDING_SHUTDOWN) {
tcp_shutdown_async(desc);
}
}
sent_low = ((Uint64)desc->sendfile.bytes_sent >> 0) & 0xFFFFFFFF;
sent_high = ((Uint64)desc->sendfile.bytes_sent >> 32) & 0xFFFFFFFF;
i = LOAD_ATOM(spec, 0, am_sendfile);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_ATOM(spec, i, am_ok);
i = LOAD_UINT(spec, i, sent_low);
i = LOAD_UINT(spec, i, sent_high);
i = LOAD_TUPLE(spec, i, 3);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i == sizeof(spec)/sizeof(*spec));
return erl_drv_output_term(desc->inet.dport, spec, i);
}
static int tcp_sendfile_aborted(tcp_descriptor* desc, int socket_error) {
ErlDrvTermData spec[LOAD_PORT_CNT + LOAD_TUPLE_CNT * 2 + LOAD_ATOM_CNT * 3];
int i;
/* We don't clean up sendfile state here, as that's done in tcp_desc_close
* following normal error handling. All we do here is report the failure. */
i = LOAD_ATOM(spec, 0, am_sendfile);
i = LOAD_PORT(spec, i, desc->inet.dport);
i = LOAD_ATOM(spec, i, am_error);
switch (socket_error) {
case ECONNRESET:
case ENOTCONN:
case EPIPE:
i = LOAD_ATOM(spec, i, am_closed);
break;
default:
i = LOAD_ATOM(spec, i, error_atom(socket_error));
}
i = LOAD_TUPLE(spec, i, 2);
i = LOAD_TUPLE(spec, i, 3);
ASSERT(i == sizeof(spec)/sizeof(*spec));
return erl_drv_output_term(desc->inet.dport, spec, i);
}
static int tcp_inet_sendfile(tcp_descriptor* desc) {
ErlDrvPort ix = desc->inet.port;
int result = 0;
ssize_t n;
DEBUGF(("tcp_inet_sendfile(%ld) {s=%d\r\n", (long)ix, desc->inet.s));
/* If there was any data in the queue by the time sendfile was issued,
* we'll need to skip it first. Note that we don't clear busy status until
* we're finished sending the file. */
while (desc->sendfile.ioq_skip > 0) {
ssize_t bytes_to_send;
SysIOVec* iov;
int vsize;
ASSERT(driver_sizeq(ix) >= desc->sendfile.ioq_skip);
if ((iov = driver_peekq(ix, &vsize)) == NULL) {
ERTS_INTERNAL_ERROR("ioq empty when sendfile.ioq_skip > 0");
}
bytes_to_send = MIN(desc->sendfile.ioq_skip, iov[0].iov_len);
n = sock_send(desc->inet.s, iov[0].iov_base, bytes_to_send, 0);
if (!IS_SOCKET_ERROR(n)) {
desc->sendfile.ioq_skip -= n;
driver_deq(ix, n);
} else if (sock_errno() == ERRNO_BLOCK) {
#ifdef __WIN32__
desc->inet.send_would_block = 1;
#endif
goto done;
} else if (sock_errno() != EINTR) {
goto socket_error;
}
}
while (desc->sendfile.length > 0) {
/* For some reason the maximum ssize_t cannot be used as the max size.
* 1GB seems to work on all platforms */
const Sint64 SENDFILE_CHUNK_SIZE = ((1UL << 30) - 1);
ssize_t bytes_to_send = MIN(SENDFILE_CHUNK_SIZE, desc->sendfile.length);
off_t offset = desc->sendfile.offset;
#if defined(__linux__)
n = sendfile(desc->inet.s, desc->sendfile.dup_file_fd, &offset,
bytes_to_send);
#elif defined(__FreeBSD__) || defined(__DragonFly__) || defined(__DARWIN__)
{
off_t bytes_sent;
int error;
#if defined(__DARWIN__)
bytes_sent = bytes_to_send;
error = sendfile(desc->sendfile.dup_file_fd, desc->inet.s, offset,
&bytes_sent, NULL, 0);
n = bytes_sent;
#else
error = sendfile(desc->sendfile.dup_file_fd, desc->inet.s, offset,
bytes_to_send, NULL, &bytes_sent, 0);
n = bytes_sent;
#endif
if(error < 0) {
/* EAGAIN/EINTR report partial success by setting bytes_sent,
* so we have to skip error handling if nonzero, and skip EOF
* handling if zero, as it's possible that we didn't manage to
* send anything at all before being interrupted by a
* signal. */
if((errno != EAGAIN && errno != EINTR) || bytes_sent == 0) {
n = -1;
}
}
}
#elif defined(__sun) && defined(__SVR4) && defined(HAVE_SENDFILEV)
{
sendfilevec_t sfvec[1];
size_t bytes_sent;
ssize_t error;
sfvec[0].sfv_fd = desc->sendfile.dup_file_fd;
sfvec[0].sfv_len = bytes_to_send;
sfvec[0].sfv_off = offset;
sfvec[0].sfv_flag = 0;
error = sendfilev(desc->inet.s, sfvec, 1, &bytes_sent);
n = bytes_sent;
if(error < 0) {
if(errno == EINVAL) {
/* On some solaris versions (I've seen it on SunOS 5.10),
* using a sfv_len larger than the filesize will result in
* a (-1 && errno == EINVAL). We translate this to a
* successful send of the data.*/
} else {
/* EAGAIN/EINTR behavior is identical to *BSD. */
if((errno != EAGAIN && errno != EINTR) || bytes_sent == 0) {
n = -1;
}
}
}
}
#else
#error "Unsupported sendfile syscall; update configure test."
#endif
if (n > 0) {
desc->sendfile.bytes_sent += n;
desc->sendfile.offset += n;
desc->sendfile.length -= n;
} else if (n == 0) {
/* EOF. */
desc->sendfile.length = 0;
break;
} else if (IS_SOCKET_ERROR(n) && sock_errno() != EINTR) {
if (sock_errno() != ERRNO_BLOCK) {
goto socket_error;
}
#ifdef __WIN32__
desc->inet.send_would_block = 1;
#endif
break;
}
}
if (desc->sendfile.length == 0) {
tcp_sendfile_completed(desc);
}
goto done;
socket_error: {
int socket_errno = sock_errno();
DEBUGF(("tcp_inet_sendfile(%ld): send errno = %d (errno %d)\r\n",
(long)desc->inet.port, socket_errno, errno));
result = tcp_send_error(desc, socket_errno);
tcp_sendfile_aborted(desc, socket_errno);
goto done;
}
done:
DEBUGF(("tcp_inet_sendfile(%ld) }\r\n", (long)desc->inet.port));
return result;
}
#endif /* HAVE_SENDFILE */
/* socket ready for ouput:
** 1. INET_STATE_CONNECTING => non block connect ?
** 2. INET_STATE_CONNECTED => write output
*/
static int tcp_inet_output(tcp_descriptor* desc, HANDLE event)
{
int ret = 0;
ErlDrvPort ix = desc->inet.port;
ASSERT(!INETP(desc)->is_ignored);
DEBUGF(("tcp_inet_output(%ld) {s=%d\r\n",
(long)desc->inet.port, desc->inet.s));
if (desc->inet.state == INET_STATE_CONNECTING) {
sock_select(INETP(desc),FD_CONNECT,0);
driver_cancel_timer(ix); /* posssibly cancel a timer */
#ifndef __WIN32__
/*
* XXX This is strange. This *should* work on Windows NT too,
* but doesn't. An bug in Winsock 2.0 for Windows NT?
*
* See "Unix Netwok Programming", W.R.Stevens, p 412 for a
* discussion about Unix portability and non blocking connect.
*/
#ifndef SO_ERROR
{
int sz, code;
sz = sizeof(desc->inet.remote);
sys_memzero((char *) &desc->inet.remote, sz);
code = sock_peer(desc->inet.s,
(struct sockaddr*) &desc->inet.remote, &sz);
if (IS_SOCKET_ERROR(code)) {
desc->inet.state = INET_STATE_OPEN; /* restore state */
ret = async_error(INETP(desc), sock_errno());
goto done;
}
}
#else
{
int error = 0; /* Has to be initiated, we check it */
unsigned int sz = sizeof(error); /* even if we get -1 */
int code = sock_getopt(desc->inet.s, SOL_SOCKET, SO_ERROR,
(void *)&error, &sz);
if ((code < 0) || error) {
desc->inet.state = INET_STATE_OPEN; /* restore state */
ret = async_error(INETP(desc), error);
goto done;
}
}
#endif /* SO_ERROR */
#endif /* !__WIN32__ */
desc->inet.state = INET_STATE_CONNECTED;
if (desc->inet.active)
sock_select(INETP(desc),(FD_READ|FD_CLOSE),1);
async_ok(INETP(desc));
}
else if (IS_CONNECTED(INETP(desc))) {
#ifdef HAVE_SENDFILE
if(desc->tcp_add_flags & TCP_ADDF_SENDFILE) {
return tcp_inet_sendfile(desc);
}
#endif
for (;;) {
int vsize;
ssize_t n;
SysIOVec* iov;
if ((iov = driver_peekq(ix, &vsize)) == NULL) {
sock_select(INETP(desc), FD_WRITE, 0);
send_empty_out_q_msgs(INETP(desc));
if (desc->tcp_add_flags & TCP_ADDF_PENDING_SHUTDOWN)
tcp_shutdown_async(desc);
goto done;
}
vsize = vsize > MAX_VSIZE ? MAX_VSIZE : vsize;
DEBUGF(("tcp_inet_output(%ld): s=%d, About to send %d items\r\n",
(long)desc->inet.port, desc->inet.s, vsize));
if (IS_SOCKET_ERROR(sock_sendv(desc->inet.s, iov, vsize, &n, 0))) {
write_error:
if ((sock_errno() != ERRNO_BLOCK) && (sock_errno() != EINTR)) {
DEBUGF(("tcp_inet_output(%ld): sock_sendv(%d) errno = %d (errno %d)\r\n",
(long)desc->inet.port, vsize, sock_errno(), errno));
ret = tcp_send_error(desc, sock_errno());
goto done;
}
#ifdef __WIN32__
desc->inet.send_would_block = 1;
#endif
goto done;
} else if (n == 0) { /* Workaround for redhat/CentOS 6.3 returning
0 when sending packets with
sizes > (max 32 bit signed int) */
size_t howmuch = 0x7FFFFFFF; /* max signed 32 bit */
int x;
for(x = 0; x < vsize && iov[x].iov_len == 0; ++x)
;
if (x < vsize) {
if (howmuch > iov[x].iov_len) {
howmuch = iov[x].iov_len;
}
n = sock_send(desc->inet.s, iov[x].iov_base,howmuch,0);
if (IS_SOCKET_ERROR(n)) {
goto write_error;
}
}
}
if (driver_deq(ix, n) <= desc->low) {
if (IS_BUSY(INETP(desc))) {
desc->inet.caller = desc->inet.busy_caller;
desc->inet.state &= ~INET_F_BUSY;
set_busy_port(desc->inet.port, 0);
/* if we have a timer then cancel and send ok to client */
if (desc->busy_on_send) {
driver_cancel_timer(desc->inet.port);
desc->busy_on_send = 0;
}
inet_reply_ok(INETP(desc));
}
}
}
}
else {
sock_select(INETP(desc),FD_CONNECT,0);
DEBUGF(("tcp_inet_output(%ld): bad state: %04x\r\n",
(long)desc->inet.port, desc->inet.state));
}
done:
DEBUGF(("tcp_inet_output(%ld) }\r\n", (long)desc->inet.port));
return ret;
}
/*-----------------------------------------------------------------------------
UDP & SCTP (the latter in a 1<->M Mode)
-----------------------------------------------------------------------------*/
#if defined(HAVE_SO_BSDCOMPAT)
#if defined(__linux__)
#include <sys/utsname.h>
static int should_use_so_bsdcompat(void)
{
/* SMP: FIXME this is probably not SMP safe but may be ok anyway? */
static int init_done;
static int so_bsdcompat_is_obsolete;
if (!init_done) {
struct utsname utsname;
unsigned int version, patchlevel;
init_done = 1;
if (uname(&utsname) < 0) {
fprintf(stderr, "uname: %s\r\n", strerror(sock_errno()));
return 1;
}
/* Format is <version>.<patchlevel>.<sublevel><extraversion>
where the first three are unsigned integers and the last
is an arbitrary string. We only care about the first two. */
if (sscanf(utsname.release, "%u.%u", &version, &patchlevel) != 2) {
fprintf(stderr, "uname: unexpected release '%s'\r\n",
utsname.release);
return 1;
}
/* SO_BSDCOMPAT is deprecated and triggers warnings in 2.5
kernels. It is a no-op in 2.4 but not in 2.2 kernels. */
if (version > 2 || (version == 2 && patchlevel >= 5))
so_bsdcompat_is_obsolete = 1;
}
return !so_bsdcompat_is_obsolete;
}
#else /* __linux__ */
#define should_use_so_bsdcompat() 1
#endif /* __linux__ */
#endif /* HAVE_SO_BSDCOMPAT */
#ifdef HAVE_SCTP
/* Copy a descriptor, by creating a new port with same settings
* as the descriptor desc.
* return NULL on error (ENFILE no ports avail)
*/
static ErlDrvData packet_inet_start(ErlDrvPort port, char* args, int protocol);
static udp_descriptor* sctp_inet_copy(udp_descriptor* desc, SOCKET s, int* err)
{
ErlDrvSizeT q_low, q_high;
ErlDrvPort port = desc->inet.port;
udp_descriptor* copy_desc;
copy_desc = (udp_descriptor*) packet_inet_start(port, NULL, IPPROTO_SCTP);
/* Setup event if needed */
if ((copy_desc->inet.s = s) != INVALID_SOCKET) {
if ((copy_desc->inet.event = sock_create_event(INETP(copy_desc))) ==
INVALID_EVENT) {
*err = sock_errno();
FREE(copy_desc);
return NULL;
}
}
/* Some flags must be inherited at this point */
copy_desc->inet.mode = desc->inet.mode;
copy_desc->inet.exitf = desc->inet.exitf;
copy_desc->inet.deliver = desc->inet.deliver;
copy_desc->inet.htype = desc->inet.htype;
copy_desc->inet.psize = desc->inet.psize;
copy_desc->inet.stype = desc->inet.stype;
copy_desc->inet.sfamily = desc->inet.sfamily;
copy_desc->inet.hsz = desc->inet.hsz;
copy_desc->inet.bufsz = desc->inet.bufsz;
/* The new port will be linked and connected to the caller */
port = driver_create_port(port, desc->inet.caller, "sctp_inet",
(ErlDrvData) copy_desc);
if ((long)port == -1) {
*err = ENFILE;
FREE(copy_desc);
return NULL;
}
/* Read busy msgq limits of parent */
q_low = q_high = ERL_DRV_BUSY_MSGQ_READ_ONLY;
erl_drv_busy_msgq_limits(desc->inet.port, &q_low, &q_high);
/* Write same busy msgq limits to child */
erl_drv_busy_msgq_limits(port, &q_low, &q_high);
copy_desc->inet.port = port;
copy_desc->inet.dport = driver_mk_port(port);
*err = 0;
return copy_desc;
}
#endif
#ifdef HAVE_UDP
static int packet_inet_init()
{
return 0;
}
static ErlDrvData packet_inet_start(ErlDrvPort port, char* args, int protocol)
{
/* "inet_start" returns "ErlDrvData", but in fact it is "inet_descriptor*",
so we can preserve it as "ErlDrvData":
*/
ErlDrvData drvd = inet_start(port, sizeof(udp_descriptor),
protocol);
udp_descriptor* desc = (udp_descriptor*) drvd;
if (desc == NULL)
return ERL_DRV_ERROR_ERRNO;
desc->read_packets = INET_PACKET_POLL;
desc->i_bufsz = 0;
desc->i_buf = NULL;
desc->i_ptr = NULL;
return drvd;
}
static ErlDrvData udp_inet_start(ErlDrvPort port, char *args)
{
ErlDrvData data = packet_inet_start(port, args, IPPROTO_UDP);
set_default_msgq_limits(port);
return data;
}
#endif
#ifdef HAVE_SCTP
static ErlDrvData sctp_inet_start(ErlDrvPort port, char *args)
{
ErlDrvData data = packet_inet_start(port, args, IPPROTO_SCTP);
set_default_msgq_limits(port);
return data;
}
#endif
#ifdef HAVE_UDP
static void packet_inet_stop(ErlDrvData e)
{
/* There should *never* be any "empty out q" subscribers on
an UDP or SCTP socket!
NB: as in "inet_start", we can always cast "ErlDRvData"
into "udp_descriptor*" or "inet_descriptor*":
*/
udp_descriptor * udesc = (udp_descriptor*) e;
inet_descriptor* descr = INETP(udesc);
if (udesc->i_buf != NULL) {
release_buffer(udesc->i_buf);
udesc->i_buf = NULL;
}
ASSERT(NO_SUBSCRIBERS(&(descr->empty_out_q_subs)));
inet_stop(descr);
}
static int packet_error(udp_descriptor* udesc, int err)
{
inet_descriptor * desc = INETP(udesc);
if (!desc->active)
async_error(desc, err);
driver_failure_posix(desc->port, err);
return -1;
}
/*
** Various functions accessible via "port_control" on the Erlang side:
*/
static ErlDrvSSizeT packet_inet_ctl(ErlDrvData e, unsigned int cmd, char* buf,
ErlDrvSizeT len, char** rbuf, ErlDrvSizeT rsize)
{
ErlDrvSSizeT replen;
udp_descriptor * udesc = (udp_descriptor *) e;
inet_descriptor* desc = INETP(udesc);
int type = SOCK_DGRAM;
int af = AF_INET;
switch(cmd) {
case INET_REQ_OPEN: /* open socket and return internal index */
DEBUGF(("packet_inet_ctl(%ld): OPEN\r\n", (long)desc->port));
if (len != 2) {
return ctl_error(EINVAL, rbuf, rsize);
}
switch (buf[0]) {
case INET_AF_INET: af = AF_INET; break;
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6: af = AF_INET6; break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL: af = AF_UNIX; break;
#endif
default:
return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
switch (buf[1]) {
case INET_TYPE_STREAM: type = SOCK_STREAM; break;
case INET_TYPE_DGRAM: type = SOCK_DGRAM; break;
#ifdef HAVE_SCTP
case INET_TYPE_SEQPACKET: type = SOCK_SEQPACKET; break;
#endif
default:
return ctl_error(EINVAL, rbuf, rsize);
}
replen = inet_ctl_open(desc, af, type, rbuf, rsize);
if ((*rbuf)[0] != INET_REP_ERROR) {
if (desc->active)
sock_select(desc,FD_READ,1);
#ifdef HAVE_SO_BSDCOMPAT
/*
* Make sure that sending UDP packets to a non existing port on an
* existing machine doesn't close the socket. (Linux behaves this
* way)
*/
if (should_use_so_bsdcompat()) {
int one = 1;
/* Ignore errors */
sock_setopt(desc->s, SOL_SOCKET, SO_BSDCOMPAT, &one,
sizeof(one));
}
#endif
}
return replen;
case INET_REQ_FDOPEN: { /* pass in an open (and optionally bound) socket */
SOCKET s;
int bound;
DEBUGF(("packet inet_ctl(%ld): FDOPEN\r\n", (long)desc->port));
if (len != 6 && len != 10) {
return ctl_error(EINVAL, rbuf, rsize);
}
switch (buf[0]) {
case INET_AF_INET: af = AF_INET; break;
#if defined(HAVE_IN6) && defined(AF_INET6)
case INET_AF_INET6: af = AF_INET6; break;
#endif
#ifdef HAVE_SYS_UN_H
case INET_AF_LOCAL: af = AF_UNIX; break;
#endif
default:
return ctl_xerror(str_eafnosupport, rbuf, rsize);
}
switch (buf[1]) {
case INET_TYPE_STREAM: type = SOCK_STREAM; break;
case INET_TYPE_DGRAM: type = SOCK_DGRAM; break;
#ifdef HAVE_SCTP
case INET_TYPE_SEQPACKET: type = SOCK_SEQPACKET; break;
#endif
default:
return ctl_error(EINVAL, rbuf, rsize);
}
s = (SOCKET)get_int32(buf+2);
if (len == 6) bound = 1;
else bound = get_int32(buf+2+4);
replen = inet_ctl_fdopen(desc, af, type, s, bound, rbuf, rsize);
if ((*rbuf)[0] != INET_REP_ERROR) {
if (desc->active)
sock_select(desc,FD_READ,1);
#ifdef HAVE_SO_BSDCOMPAT
/*
* Make sure that sending UDP packets to a non existing port on an
* existing machine doesn't close the socket. (Linux behaves this
* way)
*/
if (should_use_so_bsdcompat()) {
int one = 1;
/* Ignore errors */
sock_setopt(desc->s, SOL_SOCKET, SO_BSDCOMPAT, &one,
sizeof(one));
}
#endif
}
return replen;
}
case INET_REQ_CLOSE:
DEBUGF(("packet_inet_ctl(%ld): CLOSE\r\n", (long)desc->port));
erl_inet_close(desc);
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
case INET_REQ_CONNECT: {
/* UDP and SCTP connect operations are completely different. UDP
connect means only setting the default peer addr locally, so
it is always synchronous. SCTP connect means actual establish-
ing of an SCTP association with a remote peer, so it is async-
ronous, and similar to TCP connect. However, unlike TCP, SCTP
allows the socket to have multiple simultaneous associations:
*/
int code;
char tbuf[2];
#ifdef HAVE_SCTP
unsigned timeout;
#endif
DEBUGF(("packet_inet_ctl(%ld): CONNECT\r\n", (long)desc->port));
/* INPUT: [ Timeout(4), Port(2), Address(N) ] */
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
#ifdef HAVE_SCTP
if (IS_SCTP(desc)) {
inet_address remote;
char *xerror;
if (IS_CONNECTING(desc))
return ctl_error(EINVAL, rbuf, rsize);
if (len < 6)
return ctl_error(EINVAL, rbuf, rsize);
timeout = get_int32(buf);
buf += 4;
len -= 4;
/* For SCTP, we do not set the peer's addr in desc->remote, as
multiple peers are possible: */
if ((xerror = inet_set_faddress
(desc->sfamily, &remote, &buf, &len)) != NULL)
return ctl_xerror(xerror, rbuf, rsize);
code = sock_connect(desc->s, &remote.sa, len);
if (IS_SOCKET_ERROR(code) && (sock_errno() == EINPROGRESS)) {
/* XXX: Unix only -- WinSock would have a different cond! */
if (timeout != INET_INFINITY)
driver_set_timer(desc->port, timeout);
enq_async(desc, tbuf, INET_REQ_CONNECT);
async_ok(desc);
}
else if (code == 0) { /* OK we are connected */
enq_async(desc, tbuf, INET_REQ_CONNECT);
async_ok(desc);
}
else {
return ctl_error(sock_errno(), rbuf, rsize);
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
#endif
/* UDP */
if (len == 0) {
/* What does it mean??? NULL sockaddr??? */
sock_connect(desc->s, (struct sockaddr*) NULL, 0);
desc->state &= ~INET_F_ACTIVE;
enq_async(desc, tbuf, INET_REQ_CONNECT);
async_ok (desc);
}
else if (len < 6)
return ctl_error(EINVAL, rbuf, rsize);
else {
char *xerror;
/* Ignore timeout */
buf += 4;
len -= 4;
if ((xerror = inet_set_faddress
(desc->sfamily, &desc->remote, &buf, &len)) != NULL)
return ctl_xerror(xerror, rbuf, rsize);
code = sock_connect(desc->s,
(struct sockaddr*) &desc->remote, len);
if (IS_SOCKET_ERROR(code)) {
sock_connect(desc->s, (struct sockaddr*) NULL, 0);
desc->state &= ~INET_F_ACTIVE;
return ctl_error(sock_errno(), rbuf, rsize);
}
else /* ok we are connected */ {
enq_async(desc, tbuf, INET_REQ_CONNECT);
desc->state |= INET_F_ACTIVE;
async_ok (desc);
}
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
#ifdef HAVE_SCTP
case INET_REQ_LISTEN:
{ /* LISTEN is only for SCTP sockets, not UDP. This code is borrowed
from the TCP section. Returns: {ok,[]} on success.
*/
int backlog;
DEBUGF(("packet_inet_ctl(%ld): LISTEN\r\n", (long)desc->port));
if (!IS_SCTP(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (len != 2)
return ctl_error(EINVAL, rbuf, rsize);
backlog = get_int16(buf);
if (IS_SOCKET_ERROR(sock_listen(desc->s, backlog)))
return ctl_error(sock_errno(), rbuf, rsize);
desc->state = INET_STATE_LISTENING; /* XXX: not used? */
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
case SCTP_REQ_BINDX:
{ /* Multi-homing bind for SCTP: */
/* Add additional addresses by calling sctp_bindx with one address
at a time, since this is what some OSes promise will work.
Buff structure: Flags(1), ListItem,...:
*/
inet_address addr;
char* curr;
int add_flag, rflag;
if (!IS_SCTP(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
curr = buf;
add_flag = get_int8(curr);
curr++;
/* Make the real flags: */
rflag = add_flag ? SCTP_BINDX_ADD_ADDR : SCTP_BINDX_REM_ADDR;
while (curr < buf+len)
{
char *xerror;
/* List item format: see "inet_set_faddress": */
ErlDrvSizeT alen = buf + len - curr;
xerror = inet_set_faddress
(desc->sfamily, &addr, &curr, &alen);
if (xerror != NULL)
return ctl_xerror(xerror, rbuf, rsize);
/* Invoke the call: */
if (p_sctp_bindx(desc->s, (struct sockaddr *)&addr, 1,
rflag) < 0)
return ctl_error(sock_errno(), rbuf, rsize);
}
desc->state = INET_STATE_OPEN;
return ctl_reply(INET_REP_OK, NULL, 0, rbuf, rsize);
}
case SCTP_REQ_PEELOFF:
{
Uint32 assoc_id;
udp_descriptor* new_udesc;
int err;
SOCKET new_socket;
DEBUGF(("packet_inet_ctl(%ld): PEELOFF\r\n", (long)desc->port));
if (!IS_SCTP(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (! p_sctp_peeloff)
return ctl_error(ENOTSUP, rbuf, rsize);
if (len != 4)
return ctl_error(EINVAL, rbuf, rsize);
assoc_id = get_int32(buf);
new_socket = p_sctp_peeloff(desc->s, assoc_id);
if (IS_SOCKET_ERROR(new_socket)) {
return ctl_error(sock_errno(), rbuf, rsize);
}
desc->caller = driver_caller(desc->port);
if ((new_udesc = sctp_inet_copy(udesc, new_socket, &err)) == NULL) {
sock_close(new_socket);
desc->caller = 0;
return ctl_error(err, rbuf, rsize);
}
new_udesc->inet.state = INET_STATE_CONNECTED;
new_udesc->inet.stype = SOCK_STREAM;
SET_NONBLOCKING(new_udesc->inet.s);
inet_reply_ok_port(desc, new_udesc->inet.dport);
(*rbuf)[0] = INET_REP;
return 1;
}
#endif /* HAVE_SCTP */
case PACKET_REQ_RECV:
{ /* THIS IS A FRONT-END for "recv*" requests. It only enqueues the
request and possibly returns the data immediately available.
The actual data returning function is the back-end ("*input"):
*/
unsigned timeout;
char tbuf[2];
DEBUGF(("packet_inet_ctl(%ld): RECV\r\n", (long)desc->port));
/* INPUT: Timeout(4), Length(4) */
if (!IS_OPEN(desc))
return ctl_xerror(EXBADPORT, rbuf, rsize);
if (desc->active || (len != 8))
return ctl_error(EINVAL, rbuf, rsize);
timeout = get_int32(buf);
/* The 2nd arg, Length(4), is ignored for both UDP and SCTP protocols,
since they are msg-oriented. */
if (enq_async(desc, tbuf, PACKET_REQ_RECV) < 0)
return ctl_error(EALREADY, rbuf, rsize);
if (packet_inet_input(udesc, desc->event) == 0) {
if (timeout == 0)
async_error_am(desc, am_timeout);
else {
if (timeout != INET_INFINITY)
driver_set_timer(desc->port, timeout);
}
}
return ctl_reply(INET_REP_OK, tbuf, 2, rbuf, rsize);
}
default:
/* Delegate the request to the INET layer. In particular,
INET_REQ_BIND goes here. If the req is not recognised
there either, an error is returned:
*/
return inet_ctl(desc, cmd, buf, len, rbuf, rsize);
}
}
static void packet_inet_timeout(ErlDrvData e)
{
udp_descriptor * udesc = (udp_descriptor*) e;
inet_descriptor * desc = INETP(udesc);
if (!(desc->active))
sock_select(desc, FD_READ, 0);
async_error_am (desc, am_timeout);
}
/* THIS IS A "send*" REQUEST; on the Erlang side: "port_command".
** input should be: Family Address buffer .
** For UDP, buffer (after Address) is just data to be sent.
** For SCTP, buffer contains a list representing 2 items:
** (1) 6 parms for sctp_sndrcvinfo, as in sctp_get_sendparams();
** (2) 0+ real data bytes.
** There is no destination address -- SCTP send is performed over
** an existing association, using "sctp_sndrcvinfo" specified.
*/
static void packet_inet_command(ErlDrvData e, char* buf, ErlDrvSizeT len)
{
udp_descriptor * udesc= (udp_descriptor*) e;
inet_descriptor* desc = INETP(udesc);
char* ptr = buf;
char* qtr;
char* xerror;
ErlDrvSizeT sz;
int code;
inet_address other;
desc->caller = driver_caller(desc->port);
if (!IS_OPEN(desc)) {
inet_reply_error(desc, EINVAL);
return;
}
#ifdef HAVE_SCTP
if (IS_SCTP(desc))
{
ErlDrvSizeT data_len;
struct iovec iov[1]; /* For real data */
struct msghdr mhdr; /* Message wrapper */
struct sctp_sndrcvinfo *sri; /* The actual ancillary data */
union { /* For ancillary data */
struct cmsghdr hdr;
char ancd[CMSG_SPACE(sizeof(*sri))];
} cmsg;
if (len < SCTP_GET_SENDPARAMS_LEN) {
inet_reply_error(desc, EINVAL);
return;
}
/* The ancillary data */
sri = (struct sctp_sndrcvinfo *) (CMSG_DATA(&cmsg.hdr));
/* Get the "sndrcvinfo" from the buffer, advancing the "ptr": */
ptr = sctp_get_sendparams(sri, ptr);
/* The ancillary data wrapper */
cmsg.hdr.cmsg_level = IPPROTO_SCTP;
cmsg.hdr.cmsg_type = SCTP_SNDRCV;
cmsg.hdr.cmsg_len = CMSG_LEN(sizeof(*sri));
data_len = (buf + len) - ptr;
/* The whole msg.
* Solaris (XPG 4.2) requires iovlen >= 1 even for data_len == 0.
*/
mhdr.msg_name = NULL; /* Already connected */
mhdr.msg_namelen = 0;
iov[0].iov_len = data_len;
iov[0].iov_base = ptr; /* The real data */
mhdr.msg_iov = iov;
mhdr.msg_iovlen = 1;
mhdr.msg_control = cmsg.ancd; /* For ancillary data */
mhdr.msg_controllen = cmsg.hdr.cmsg_len;
VALGRIND_MAKE_MEM_DEFINED(mhdr.msg_control, mhdr.msg_controllen); /*suppress "uninitialised bytes"*/
mhdr.msg_flags = 0; /* Not used with "sendmsg" */
inet_output_count(desc, data_len);
/* Now do the actual sending. NB: "flags" in "sendmsg" itself are NOT
used: */
code = sock_sendmsg(desc->s, &mhdr, 0);
goto check_result_code;
}
#endif
/* UDP socket. Even if it is connected, there is an address prefix
here -- ignored for connected sockets: */
sz = len;
qtr = ptr;
xerror = inet_set_faddress(desc->sfamily, &other, &qtr, &sz);
if (xerror != NULL) {
inet_reply_error_am(desc, driver_mk_atom(xerror));
return;
}
len -= (qtr - ptr);
ptr = qtr;
/* Now "ptr" is the user data ptr, "len" is data length: */
inet_output_count(desc, len);
if (desc->state & INET_F_ACTIVE) { /* connected (ignore address) */
code = sock_send(desc->s, ptr, len, 0);
}
else {
code = sock_sendto(desc->s, ptr, len, 0, &other.sa, sz);
}
#ifdef HAVE_SCTP
check_result_code:
/* "code" analysis is the same for both SCTP and UDP cases above: */
#endif
if (IS_SOCKET_ERROR(code)) {
int err = sock_errno();
inet_reply_error(desc, err);
}
else
inet_reply_ok(desc);
}
#endif
#ifdef __WIN32__
static void packet_inet_event(ErlDrvData e, ErlDrvEvent event)
{
udp_descriptor * udesc = (udp_descriptor*)e;
inet_descriptor* desc = INETP(udesc);
WSANETWORKEVENTS netEv;
if ((WSAEnumNetworkEvents)(desc->s, desc->event, &netEv) != 0) {
DEBUGF(( "port %d: EnumNetwrokEvents = %d\r\n",
desc->port, sock_errno() ));
return; /* -1; */
}
netEv.lNetworkEvents |= desc->forced_events;
if (netEv.lNetworkEvents & FD_READ) {
packet_inet_input(udesc, (HANDLE)event);
}
}
#endif
#ifdef HAVE_UDP
static void packet_inet_drv_input(ErlDrvData e, ErlDrvEvent event)
{
(void) packet_inet_input((udp_descriptor*)e, (HANDLE)event);
}
/*
** THIS IS A BACK-END FOR "recv*" REQUEST, which actually receives the
** data requested, and delivers them to the caller:
*/
static int packet_inet_input(udp_descriptor* udesc, HANDLE event)
{
inet_descriptor* desc = INETP(udesc);
int n;
inet_address other;
char abuf[sizeof(inet_address)]; /* buffer address; enough??? */
int packet_count = udesc->read_packets;
int count = 0; /* number of packets delivered to owner */
#ifndef __WIN32__
struct msghdr mhdr; /* Top-level msg structure */
struct iovec iov[1]; /* Data or Notification Event */
char ancd[ANC_BUFF_SIZE]; /* Ancillary Data */
#endif
#ifdef HAVE_SCTP
int short_recv = 0;
#endif
while(packet_count--) {
unsigned int len = sizeof(other);
sys_memzero((char *) &other, sizeof(other));
/* udesc->i_buf is only kept between SCTP fragments */
#ifdef HAVE_SCTP
if (udesc->i_buf != NULL) {
ErlDrvBinary* tmp;
int bufsz;
ASSERT(IS_SCTP(desc));
bufsz = desc->bufsz + (udesc->i_ptr - udesc->i_buf->orig_bytes);
if ((tmp = realloc_buffer(udesc->i_buf, bufsz)) == NULL) {
release_buffer(udesc->i_buf);
udesc->i_buf = NULL;
return packet_error(udesc, ENOMEM);
} else {
udesc->i_ptr =
tmp->orig_bytes + (udesc->i_ptr - udesc->i_buf->orig_bytes);
udesc->i_buf = tmp;
udesc->i_bufsz = bufsz;
}
} else
#endif
{
ASSERT(udesc->i_buf == NULL);
udesc->i_bufsz = desc->bufsz + len;
if ((udesc->i_buf = alloc_buffer(udesc->i_bufsz)) == NULL)
return packet_error(udesc, ENOMEM);
/* pointer to message start */
udesc->i_ptr = udesc->i_buf->orig_bytes + len;
}
/* Note: On Windows NT, recvfrom() fails if the socket is connected. */
#ifdef HAVE_SCTP
/* For SCTP we must use recvmsg() */
if (IS_SCTP(desc)) {
iov->iov_base = udesc->i_ptr; /* Data will come here */
iov->iov_len = desc->bufsz; /* Remaining buffer space */
mhdr.msg_name = &other; /* Peer addr comes into "other" */
mhdr.msg_namelen = len;
mhdr.msg_iov = iov;
mhdr.msg_iovlen = 1;
mhdr.msg_control = ancd;
mhdr.msg_controllen = ANC_BUFF_SIZE;
mhdr.msg_flags = 0; /* To be filled by "recvmsg" */
/* Do the actual SCTP receive: */
n = sock_recvmsg(desc->s, &mhdr, 0);
len = mhdr.msg_namelen;
goto check_result;
}
#endif
/* Use recv() instead on connected sockets. */
if ((desc->state & INET_F_ACTIVE)) {
n = sock_recv(desc->s, udesc->i_ptr, desc->bufsz, 0);
other = desc->remote;
goto check_result;
}
#ifndef __WIN32__
/* recvmsg() does not exist in the Winsock API */
if (desc->recv_cmsgflags) {
/* Use recvmsg() */
iov->iov_base = udesc->i_ptr;
iov->iov_len = desc->bufsz;
mhdr.msg_name = &other;
mhdr.msg_namelen = len;
mhdr.msg_iov = iov;
mhdr.msg_iovlen = 1;
mhdr.msg_control = ancd;
mhdr.msg_controllen = ANC_BUFF_SIZE;
mhdr.msg_flags = 0;
n = sock_recvmsg(desc->s, &mhdr, 0);
len = mhdr.msg_namelen;
goto check_result;
}
#endif
n = sock_recvfrom(desc->s, udesc->i_ptr, desc->bufsz,
0, &other.sa, &len);
check_result:
/* Analyse the result: */
if (IS_SOCKET_ERROR(n)) {
int err = sock_errno();
if (err != ERRNO_BLOCK) {
/* real error */
release_buffer(udesc->i_buf);
udesc->i_buf = NULL;
if (!desc->active) {
async_error(desc, err);
driver_cancel_timer(desc->port);
sock_select(desc,FD_READ,0);
}
else {
/* This is for an active desc only: */
packet_error_message(udesc, err);
}
return count;
}
/* would block error - try again */
if (!desc->active
#ifdef HAVE_SCTP
|| short_recv
#endif
) {
sock_select(desc,FD_READ,1);
}
#ifdef HAVE_SCTP
if (!short_recv) {
#endif
release_buffer(udesc->i_buf);
udesc->i_buf = NULL;
#ifdef HAVE_SCTP
}
#endif
return count; /* strange, not ready */
}
#ifdef HAVE_SCTP
if (IS_SCTP(desc) && (short_recv = !(mhdr.msg_flags & MSG_EOR))) {
/* SCTP non-final message fragment */
inet_input_count(desc, n);
udesc->i_ptr += n;
continue; /* wait for more fragments */
}
#endif
{
/* message received */
int code;
void *mp;
char * ptr;
int nsz;
inet_input_count(desc, n);
udesc->i_ptr += n;
inet_get_address(abuf, &other, &len);
/* Copy formatted address to the buffer allocated; "len" is the
actual length which must be <= than the original reserved.
This means that the addr + data in the buffer are contiguous,
but they may start not at the "orig_bytes", instead at "ptr":
*/
ASSERT (len <= sizeof(other));
ptr = udesc->i_buf->orig_bytes + sizeof(other) - len;
sys_memcpy(ptr, abuf, len);
nsz = udesc->i_ptr - ptr;
/* Check if we need to reallocate binary */
if ((desc->mode == INET_MODE_BINARY)
&& (desc->hsz < (nsz - len))
&& (nsz + BIN_REALLOC_MARGIN(desc->bufsz) < udesc->i_bufsz)) {
ErlDrvBinary* tmp;
int bufsz;
bufsz = udesc->i_ptr - udesc->i_buf->orig_bytes;
if ((tmp = realloc_buffer(udesc->i_buf, bufsz)) != NULL) {
udesc->i_buf = tmp;
udesc->i_bufsz = bufsz;
udesc->i_ptr = NULL; /* not used from here */
}
}
mp = NULL;
#ifdef HAVE_SCTP
if (IS_SCTP(desc)) mp = &mhdr;
#endif
#ifndef __WIN32__
if (desc->recv_cmsgflags) mp = &mhdr;
#endif
/* Actual parsing and return of the data received, occur here: */
code = packet_reply_binary_data(desc, len, udesc->i_buf,
(sizeof(other) - len),
nsz,
mp);
free_buffer(udesc->i_buf);
udesc->i_buf = NULL;
if (code < 0)
return count;
count++;
if (!desc->active) {
driver_cancel_timer(desc->port); /* possibly cancel */
sock_select(desc,FD_READ,0);
return count; /* passive mode (read one packet only) */
}
}
} /* while(packet_count--) { */
/* we ran out of tries (packet_count) either on an active socket
* that got that many messages or an SCTP socket that got that
* many message fragments but still not the final
*/
#ifdef HAVE_SCTP
if (short_recv) {
sock_select(desc, FD_READ, 1);
}
#endif
return count;
}
#endif
/*---------------------------------------------------------------------------*/
#ifdef __WIN32__
/*
* Although we no longer need to lookup all of winsock2 dynamically,
* there are still some function(s) we need to look up.
*/
static void find_dynamic_functions(void)
{
char kernel_dll_name[] = "kernel32";
HMODULE module;
module = GetModuleHandle(kernel_dll_name);
fpSetHandleInformation = (module != NULL) ?
(BOOL (WINAPI *)(HANDLE,DWORD,DWORD))
GetProcAddress(module,"SetHandleInformation") :
NULL;
}
/*
* We must make sure that the socket handles are not inherited
* by port programs (if there are inherited, the sockets will not
* get closed when the emulator terminates, and epmd and other Erlang
* nodes will not notice that we have exited).
*
* XXX It is not clear whether this works/is necessary in Windows 95.
* There could also be problems with Winsock implementations from other
* suppliers than Microsoft.
*/
static SOCKET
make_noninheritable_handle(SOCKET s)
{
if (s != INVALID_SOCKET) {
if (fpSetHandleInformation != NULL) {
(*fpSetHandleInformation)((HANDLE) s, HANDLE_FLAG_INHERIT, 0);
} else {
HANDLE non_inherited;
HANDLE this_process = GetCurrentProcess();
if (DuplicateHandle(this_process, (HANDLE) s,
this_process, &non_inherited, 0,
FALSE, DUPLICATE_SAME_ACCESS)) {
sock_close(s);
s = (SOCKET) non_inherited;
}
}
}
return s;
}
#endif /* UDP for __WIN32__ */
/*
* Multi-timers
*/
static void fire_multi_timers(MultiTimerData **first, ErlDrvPort port,
ErlDrvData data)
{
ErlDrvTime next_timeout;
if (!*first) {
ASSERT(0);
return;
}
#ifdef DEBUG
{
ErlDrvTime chk = erl_drv_monotonic_time(ERL_DRV_MSEC);
ASSERT(chk >= (*first)->when);
}
#endif
do {
MultiTimerData *save = *first;
*first = save->next;
(*(save->timeout_function))(data,save->caller);
FREE(save);
if (*first == NULL) {
return;
}
(*first)->prev = NULL;
next_timeout = (*first)->when - erl_drv_monotonic_time(ERL_DRV_MSEC);
} while (next_timeout <= 0);
driver_set_timer(port, (unsigned long) next_timeout);
}
static void clean_multi_timers(MultiTimerData **first, ErlDrvPort port)
{
MultiTimerData *p;
if (*first) {
driver_cancel_timer(port);
}
while (*first) {
p = *first;
*first = p->next;
FREE(p);
}
}
static void remove_multi_timer(MultiTimerData **first, ErlDrvPort port, MultiTimerData *p)
{
if (p->prev != NULL) {
p->prev->next = p->next;
} else {
driver_cancel_timer(port);
*first = p->next;
if (*first) {
ErlDrvTime ntmo = (*first)->when - erl_drv_monotonic_time(ERL_DRV_MSEC);
if (ntmo < 0)
ntmo = 0;
driver_set_timer(port, (unsigned long) ntmo);
}
}
if (p->next != NULL) {
p->next->prev = p->prev;
}
FREE(p);
}
static MultiTimerData *add_multi_timer(MultiTimerData **first, ErlDrvPort port,
ErlDrvTermData caller, unsigned timeout,
void (*timeout_fun)(ErlDrvData drv_data,
ErlDrvTermData caller))
{
MultiTimerData *mtd, *p, *s;
mtd = ALLOC(sizeof(MultiTimerData));
mtd->when = erl_drv_monotonic_time(ERL_DRV_MSEC) + ((ErlDrvTime) timeout) + 1;
mtd->timeout_function = timeout_fun;
mtd->caller = caller;
mtd->next = mtd->prev = NULL;
for(p = *first,s = NULL; p != NULL; s = p, p = p->next) {
if (p->when >= mtd->when) {
break;
}
}
if (!p) {
if (!s) {
*first = mtd;
} else {
s->next = mtd;
mtd->prev = s;
}
} else {
if (!s) {
*first = mtd;
} else {
s->next = mtd;
mtd->prev = s;
}
mtd->next = p;
p->prev = mtd;
}
if (!s) {
if (mtd->next) {
driver_cancel_timer(port);
}
driver_set_timer(port,timeout);
}
return mtd;
}
/*-----------------------------------------------------------------------------
Subscription
-----------------------------------------------------------------------------*/
static int
save_subscriber(subs, subs_pid)
subs_list *subs; ErlDrvTermData subs_pid;
{
subs_list *tmp;
if(NO_SUBSCRIBERS(subs)) {
subs->subscriber = subs_pid;
subs->next = NULL;
}
else {
tmp = subs->next;
subs->next = ALLOC(sizeof(subs_list));
if(subs->next == NULL) {
subs->next = tmp;
return 0;
}
subs->next->subscriber = subs_pid;
subs->next->next = tmp;
}
return 1;
}
static void
free_subscribers(subs)
subs_list *subs;
{
subs_list *this;
subs_list *next;
this = subs->next;
while(this) {
next = this->next;
FREE((void *) this);
this = next;
}
subs->subscriber = NO_PROCESS;
subs->next = NULL;
}
static void send_to_subscribers
(
ErlDrvTermData port,
subs_list *subs,
int free_subs,
ErlDrvTermData msg[],
int msg_len
)
{
subs_list *this;
subs_list *next;
int first = 1;
if(NO_SUBSCRIBERS(subs))
return;
this = subs;
while(this) {
(void) erl_drv_send_term(port, this->subscriber, msg, msg_len);
if(free_subs && !first) {
next = this->next;
FREE((void *) this);
this = next;
}
else
this = this->next;
first = 0;
}
if(free_subs) {
subs->subscriber = NO_PROCESS;
subs->next = NULL;
}
}
/*
* A *very* limited socket interface. Used by the memory tracer
* (erl_mtrace.c).
*/
#include "erl_sock.h"
erts_sock_t erts_sock_open(void)
{
SOCKET s;
if(!sock_init())
return ERTS_SOCK_INVALID_SOCKET;
s = sock_open(AF_INET, SOCK_STREAM, 0);
if (s == INVALID_SOCKET)
return ERTS_SOCK_INVALID_SOCKET;
return (erts_sock_t) s;
}
void erts_sock_close(erts_sock_t socket)
{
if (socket != ERTS_SOCK_INVALID_SOCKET)
sock_close((SOCKET) socket);
}
int erts_sock_connect(erts_sock_t socket, byte *ip_addr, int len, Uint16 port)
{
SOCKET s = (SOCKET) socket;
char buf[2 + 4], *p;
ErlDrvSizeT blen = 6;
inet_address addr;
if (socket == ERTS_SOCK_INVALID_SOCKET || len != 4)
return 0;
put_int16(port, buf);
memcpy((void *) (buf + 2), (void *) ip_addr, 4);
p = buf;
if (inet_set_address(AF_INET, &addr, &p, &blen) != NULL)
return 0;
if (IS_SOCKET_ERROR
(sock_connect(s, (struct sockaddr *) &addr, blen)))
return 0;
return 1;
}
Sint erts_sock_send(erts_sock_t socket, const void *buf, Sint len)
{
Sint result = (Sint) sock_send((SOCKET) socket, buf, (size_t) len, 0);
if (IS_SOCKET_ERROR(result))
return SOCKET_ERROR;
return result;
}
int erts_sock_gethostname(char *buf, int bufsz)
{
if (IS_SOCKET_ERROR(sock_hostname(buf, bufsz)))
return SOCKET_ERROR;
return 0;
}
int erts_sock_errno()
{
return sock_errno();
}
|