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
|
/* tox.h
*
* The Tox public API.
*
* Copyright (C) 2013 Tox project All Rights Reserved.
*
* This file is part of Tox.
*
* Tox is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Tox is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Tox. If not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef TOX_H
#define TOX_H
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#ifdef __cplusplus
extern "C" {
#endif
/** \page core Public core API for Tox clients.
*
* Every function that can fail takes a function-specific error code pointer
* that can be used to diagnose problems with the Tox state or the function
* arguments. The error code pointer can be NULL, which does not influence the
* function's behaviour, but can be done if the reason for failure is irrelevant
* to the client.
*
* The exception to this rule are simple allocation functions whose only failure
* mode is allocation failure. They return NULL in that case, and do not set an
* error code.
*
* Every error code type has an OK value to which functions will set their error
* code value on success. Clients can keep their error code uninitialised before
* passing it to a function. The library guarantees that after returning, the
* value pointed to by the error code pointer has been initialised.
*
* Functions with pointer parameters often have a NULL error code, meaning they
* could not perform any operation, because one of the required parameters was
* NULL. Some functions operate correctly or are defined as effectless on NULL.
*
* Some functions additionally return a value outside their
* return type domain, or a bool containing true on success and false on
* failure.
*
* All functions that take a Tox instance pointer will cause undefined behaviour
* when passed a NULL Tox pointer.
*
* All integer values are expected in host byte order.
*
* Functions with parameters with enum types cause unspecified behaviour if the
* enumeration value is outside the valid range of the type. If possible, the
* function will try to use a sane default, but there will be no error code,
* and one possible action for the function to take is to have no effect.
*/
/** \subsection events Events and callbacks
*
* Events are handled by callbacks. One callback can be registered per event.
* All events have a callback function type named `tox_${event}_cb` and a
* function to register it named `tox_callback_${event}`. Passing a NULL
* callback will result in no callback being registered for that event. Only
* one callback per event can be registered, so if a client needs multiple
* event listeners, it needs to implement the dispatch functionality itself.
*/
/** \subsection threading Threading implications
*
* It is possible to run multiple concurrent threads with a Tox instance for
* each thread. It is also possible to run all Tox instances in the same thread.
* A common way to run Tox (multiple or single instance) is to have one thread
* running a simple tox_iteration loop, sleeping for tox_iteration_interval
* milliseconds on each iteration.
*
* If you want to access a single Tox instance from multiple threads, access
* to the instance must be synchronised. While multiple threads can concurrently
* access multiple different Tox instances, no more than one API function can
* operate on a single instance at any given time.
*
* Functions that write to variable length byte arrays will always have a size
* function associated with them. The result of this size function is only valid
* until another mutating function (one that takes a pointer to non-const Tox)
* is called. Thus, clients must ensure that no other thread calls a mutating
* function between the call to the size function and the call to the retrieval
* function.
*
* E.g. to get the current nickname, one would write
*
* \code
* size_t length = tox_self_get_name_size(tox);
* uint8_t *name = malloc(length);
* if (!name) abort();
* tox_self_get_name(tox, name);
* \endcode
*
* If any other thread calls tox_self_set_name while this thread is allocating
* memory, the length will have become invalid, and the call to
* tox_self_get_name may cause undefined behaviour.
*/
#ifndef TOX_DEFINED
#define TOX_DEFINED
/**
* The Tox instance type. All the state associated with a connection is held
* within the instance. Multiple instances can exist and operate concurrently.
* The maximum number of Tox instances that can exist on a single network
* device is limited. Note that this is not just a per-process limit, since the
* limiting factor is the number of usable ports on a device.
*/
typedef struct Tox Tox;
#endif
/*******************************************************************************
*
* :: API version
*
******************************************************************************/
/**
* The major version number. Incremented when the API or ABI changes in an
* incompatible way.
*/
#define TOX_VERSION_MAJOR 0u
/**
* The minor version number. Incremented when functionality is added without
* breaking the API or ABI. Set to 0 when the major version number is
* incremented.
*/
#define TOX_VERSION_MINOR 0u
/**
* The patch or revision number. Incremented when bugfixes are applied without
* changing any functionality or API or ABI.
*/
#define TOX_VERSION_PATCH 0u
/**
* A macro to check at preprocessing time whether the client code is compatible
* with the installed version of Tox.
*/
#define TOX_VERSION_IS_API_COMPATIBLE(MAJOR, MINOR, PATCH) \
(TOX_VERSION_MAJOR == MAJOR && \
(TOX_VERSION_MINOR > MINOR || \
(TOX_VERSION_MINOR == MINOR && \
TOX_VERSION_PATCH >= PATCH)))
/**
* A macro to make compilation fail if the client code is not compatible with
* the installed version of Tox.
*/
#define TOX_VERSION_REQUIRE(MAJOR, MINOR, PATCH) \
typedef char tox_required_version[TOX_IS_COMPATIBLE(MAJOR, MINOR, PATCH) ? 1 : -1]
/**
* Return the major version number of the library. Can be used to display the
* Tox library version or to check whether the client is compatible with the
* dynamically linked version of Tox.
*/
uint32_t tox_version_major(void);
/**
* Return the minor version number of the library.
*/
uint32_t tox_version_minor(void);
/**
* Return the patch number of the library.
*/
uint32_t tox_version_patch(void);
/**
* Return whether the compiled library version is compatible with the passed
* version numbers.
*/
bool tox_version_is_compatible(uint32_t major, uint32_t minor, uint32_t patch);
/**
* A convenience macro to call tox_version_is_compatible with the currently
* compiling API version.
*/
#define TOX_VERSION_IS_ABI_COMPATIBLE() \
tox_version_is_compatible(TOX_VERSION_MAJOR, TOX_VERSION_MINOR, TOX_VERSION_PATCH)
/*******************************************************************************
*
* :: Numeric constants
*
******************************************************************************/
/**
* The size of a Tox Public Key in bytes.
*/
#define TOX_PUBLIC_KEY_SIZE 32
/**
* The size of a Tox Secret Key in bytes.
*/
#define TOX_SECRET_KEY_SIZE 32
/**
* The size of a Tox address in bytes. Tox addresses are in the format
* [Public Key (TOX_PUBLIC_KEY_SIZE bytes)][nospam (4 bytes)][checksum (2 bytes)].
*
* The checksum is computed over the Public Key and the nospam value. The first
* byte is an XOR of all the even bytes (0, 2, 4, ...), the second byte is an
* XOR of all the odd bytes (1, 3, 5, ...) of the Public Key and nospam.
*/
#define TOX_ADDRESS_SIZE (TOX_PUBLIC_KEY_SIZE + sizeof(uint32_t) + sizeof(uint16_t))
/**
* Maximum length of a nickname in bytes.
*/
#define TOX_MAX_NAME_LENGTH 128
/**
* Maximum length of a status message in bytes.
*/
#define TOX_MAX_STATUS_MESSAGE_LENGTH 1007
/**
* Maximum length of a friend request message in bytes.
*/
#define TOX_MAX_FRIEND_REQUEST_LENGTH 1016
/**
* Maximum length of a single message after which it should be split.
*/
#define TOX_MAX_MESSAGE_LENGTH 1372
/**
* Maximum size of custom packets. TODO: should be LENGTH?
*/
#define TOX_MAX_CUSTOM_PACKET_SIZE 1373
/**
* The number of bytes in a hash generated by tox_hash.
*/
#define TOX_HASH_LENGTH /*crypto_hash_sha256_BYTES*/ 32
/**
* The number of bytes in a file id.
*/
#define TOX_FILE_ID_LENGTH 32
/**
* Maximum file name length for file tran.
*/
#define TOX_MAX_FILENAME_LENGTH 255
/*******************************************************************************
*
* :: Global enumerations
*
******************************************************************************/
/**
* Represents the possible statuses a client can have.
*/
typedef enum TOX_USER_STATUS {
/**
* User is online and available.
*/
TOX_USER_STATUS_NONE,
/**
* User is away. Clients can set this e.g. after a user defined
* inactivity time.
*/
TOX_USER_STATUS_AWAY,
/**
* User is busy. Signals to other clients that this client does not
* currently wish to communicate.
*/
TOX_USER_STATUS_BUSY
} TOX_USER_STATUS;
/**
* Represents message types for friend messages and group chat
* messages.
*/
typedef enum TOX_MESSAGE_TYPE {
/**
* Normal text message. Similar to PRIVMSG on IRC.
*/
TOX_MESSAGE_TYPE_NORMAL,
/**
* A message describing an user action. This is similar to /me (CTCP ACTION)
* on IRC.
*/
TOX_MESSAGE_TYPE_ACTION
} TOX_MESSAGE_TYPE;
/*******************************************************************************
*
* :: Startup options
*
******************************************************************************/
typedef enum TOX_PROXY_TYPE {
/**
* Don't use a proxy.
*/
TOX_PROXY_TYPE_NONE,
/**
* HTTP proxy using CONNECT.
*/
TOX_PROXY_TYPE_HTTP,
/**
* SOCKS proxy for simple socket pipes.
*/
TOX_PROXY_TYPE_SOCKS5
} TOX_PROXY_TYPE;
/**
* This struct contains all the startup options for Tox. You can either allocate
* this object yourself, and pass it to tox_options_default, or call
* tox_options_new to get a new default options object.
*/
struct Tox_Options {
/**
* The type of socket to create.
*
* If this is set to false, an IPv4 socket is created, which subsequently
* only allows IPv4 communication.
* If it is set to true, an IPv6 socket is created, allowing both IPv4 and
* IPv6 communication.
*/
bool ipv6_enabled;
/**
* Enable the use of UDP communication when available.
*
* Setting this to false will force Tox to use TCP only. Communications will
* need to be relayed through a TCP relay node, potentially slowing them down.
* Disabling UDP support is necessary when using anonymous proxies or Tor.
*/
bool udp_enabled;
/**
* Pass communications through a proxy.
*/
TOX_PROXY_TYPE proxy_type;
/**
* The IP address or DNS name of the proxy to be used.
*
* If used, this must be non-NULL and be a valid DNS name. The name must not
* exceed 255 characters, and be in a NUL-terminated C string format
* (255 chars + 1 NUL byte).
*
* This member is ignored (it can be NULL) if proxy_type is TOX_PROXY_TYPE_NONE.
*/
const char *proxy_host;
/**
* The port to use to connect to the proxy server.
*
* Ports must be in the range (1, 65535). The value is ignored if
* proxy_type is TOX_PROXY_TYPE_NONE.
*/
uint16_t proxy_port;
/**
* The start port of the inclusive port range to attempt to use.
*
* If both start_port and end_port are 0, the default port range will be
* used: [33445, 33545].
*
* If either start_port or end_port is 0 while the other is non-zero, the
* non-zero port will be the only port in the range.
*
* Having start_port > end_port will yield the same behavior as if start_port
* and end_port were swapped.
*/
uint16_t start_port;
/**
* The end port of the inclusive port range to attempt to use.
*/
uint16_t end_port;
};
/**
* Initialises a Tox_Options object with the default options.
*
* The result of this function is independent of the original options. All
* values will be overwritten, no values will be read (so it is permissible
* to pass an uninitialised object).
*
* If options is NULL, this function has no effect.
*
* @param options An options object to be filled with default options.
*/
void tox_options_default(struct Tox_Options *options);
typedef enum TOX_ERR_OPTIONS_NEW {
TOX_ERR_OPTIONS_NEW_OK,
/**
* The function failed to allocate enough memory for the options struct.
*/
TOX_ERR_OPTIONS_NEW_MALLOC
} TOX_ERR_OPTIONS_NEW;
/**
* Allocates a new Tox_Options object and initialises it with the default
* options. This function can be used to preserve long term ABI compatibility by
* giving the responsibility of allocation and deallocation to the Tox library.
*
* Objects returned from this function must be freed using the tox_options_free
* function.
*
* @return A new Tox_Options object with default options or NULL on failure.
*/
struct Tox_Options *tox_options_new(TOX_ERR_OPTIONS_NEW *error);
/**
* Releases all resources associated with an options objects.
*
* Passing a pointer that was not returned by tox_options_new results in
* undefined behaviour.
*/
void tox_options_free(struct Tox_Options *options);
/*******************************************************************************
*
* :: Creation and destruction
*
******************************************************************************/
typedef enum TOX_ERR_NEW {
TOX_ERR_NEW_OK,
TOX_ERR_NEW_NULL,
/**
* The function was unable to allocate enough memory to store the internal
* structures for the Tox object.
*/
TOX_ERR_NEW_MALLOC,
/**
* The function was unable to bind to a port. This may mean that all ports
* have already been bound, e.g. by other Tox instances, or it may mean
* a permission error. You may be able to gather more information from errno.
*/
TOX_ERR_NEW_PORT_ALLOC,
/**
* proxy_type was invalid.
*/
TOX_ERR_NEW_PROXY_BAD_TYPE,
/**
* proxy_type was valid but the proxy_host passed had an invalid format
* or was NULL.
*/
TOX_ERR_NEW_PROXY_BAD_HOST,
/**
* proxy_type was valid, but the proxy_port was invalid.
*/
TOX_ERR_NEW_PROXY_BAD_PORT,
/**
* The proxy host passed could not be resolved.
*/
TOX_ERR_NEW_PROXY_NOT_FOUND,
/**
* The byte array to be loaded contained an encrypted save.
*/
TOX_ERR_NEW_LOAD_ENCRYPTED,
/**
* The data format was invalid. This can happen when loading data that was
* saved by an older version of Tox, or when the data has been corrupted.
* When loading from badly formatted data, some data may have been loaded,
* and the rest is discarded. Passing an invalid length parameter also
* causes this error.
*/
TOX_ERR_NEW_LOAD_BAD_FORMAT
} TOX_ERR_NEW;
/**
* @brief Creates and initialises a new Tox instance with the options passed.
*
* This function will bring the instance into a valid state. Running the event
* loop with a new instance will operate correctly.
*
* If the data parameter is not NULL, this function will load the Tox instance
* from a byte array previously filled by tox_get_savedata.
*
* If loading failed or succeeded only partially, the new or partially loaded
* instance is returned and an error code is set.
*
* @param options An options object as described above. If this parameter is
* NULL, the default options are used.
* @param data A byte array containing data previously stored by tox_get_savedata.
* @param length The length of the byte array data. If this parameter is 0, the
* data parameter is ignored.
*
* @see tox_iteration for the event loop.
*/
Tox *tox_new(const struct Tox_Options *options, const uint8_t *data, size_t length, TOX_ERR_NEW *error);
/**
* Releases all resources associated with the Tox instance and disconnects from
* the network.
*
* After calling this function, the Tox pointer becomes invalid. No other
* functions can be called, and the pointer value can no longer be read.
*/
void tox_kill(Tox *tox);
/**
* Calculates the number of bytes required to store the tox instance with
* tox_get_savedata. This function cannot fail. The result is always greater
* than 0.
*
* @see threading for concurrency implications.
*/
size_t tox_get_savedata_size(const Tox *tox);
/**
* Store all information associated with the tox instance to a byte array.
*
* @param data A memory region large enough to store the tox instance data.
* Call tox_get_savedata_size to find the number of bytes required. If this parameter
* is NULL, this function has no effect.
*/
void tox_get_savedata(const Tox *tox, uint8_t *data);
/*******************************************************************************
*
* :: Connection lifecycle and event loop
*
******************************************************************************/
typedef enum TOX_ERR_BOOTSTRAP {
TOX_ERR_BOOTSTRAP_OK,
TOX_ERR_BOOTSTRAP_NULL,
/**
* The host could not be resolved to an IP address, or the IP address
* passed was invalid.
*/
TOX_ERR_BOOTSTRAP_BAD_HOST,
/**
* The port passed was invalid. The valid port range is (1, 65535).
*/
TOX_ERR_BOOTSTRAP_BAD_PORT
} TOX_ERR_BOOTSTRAP;
/**
* Sends a "get nodes" request to the given bootstrap node with IP, port, and
* public key to setup connections.
*
* This function will attempt to connect to the node using UDP and TCP at the
* same time.
*
* Tox will use the node as a TCP relay in case Tox_Options.udp_enabled was
* false, and also to connect to friends that are in TCP-only mode. Tox will
* also use the TCP connection when NAT hole punching is slow, and later switch
* to UDP if hole punching succeeds.
*
* @param host The hostname or IP address (IPv4 or IPv6) of the node.
* @param port The port on the host on which the bootstrap Tox instance is
* listening.
* @param public_key The long term public key of the bootstrap node
* (TOX_PUBLIC_KEY_SIZE bytes).
* @return true on success.
*/
bool tox_bootstrap(Tox *tox, const char *host, uint16_t port, const uint8_t *public_key, TOX_ERR_BOOTSTRAP *error);
/**
* Adds additional host:port pair as TCP relay.
*
* This function can be used to initiate TCP connections to different ports on
* the same bootstrap node, or to add TCP relays without using them as
* bootstrap nodes.
*
* @param host The hostname or IP address (IPv4 or IPv6) of the TCP relay.
* @param port The port on the host on which the TCP relay is listening.
* @param public_key The long term public key of the TCP relay
* (TOX_PUBLIC_KEY_SIZE bytes).
* @return true on success.
*/
bool tox_add_tcp_relay(Tox *tox, const char *host, uint16_t port, const uint8_t *public_key,
TOX_ERR_BOOTSTRAP *error);
typedef enum TOX_CONNECTION {
/**
* There is no connection. This instance, or the friend the state change is
* about, is now offline.
*/
TOX_CONNECTION_NONE,
/**
* A TCP connection has been established. For the own instance, this means it
* is connected through a TCP relay, only. For a friend, this means that the
* connection to that particular friend goes through a TCP relay.
*/
TOX_CONNECTION_TCP,
/**
* A UDP connection has been established. For the own instance, this means it
* is able to send UDP packets to DHT nodes, but may still be connected to
* a TCP relay. For a friend, this means that the connection to that
* particular friend was built using direct UDP packets.
*/
TOX_CONNECTION_UDP
} TOX_CONNECTION;
/**
* Return whether we are connected to the DHT. The return value is equal to the
* last value received through the `self_connection_status` callback.
*/
TOX_CONNECTION tox_self_get_connection_status(const Tox *tox);
/**
* The function type for the `self_connection_status` callback.
*
* @param connection_status Equal to the return value of
* tox_self_get_connection_status.
*/
typedef void tox_self_connection_status_cb(Tox *tox, TOX_CONNECTION connection_status, void *user_data);
/**
* Set the callback for the `self_connection_status` event. Pass NULL to unset.
*
* This event is triggered whenever there is a change in the DHT connection
* state. When disconnected, a client may choose to call tox_bootstrap again, to
* reconnect to the DHT. Note that this state may frequently change for short
* amounts of time. Clients should therefore not immediately bootstrap on
* receiving a disconnect.
*
* TODO: how long should a client wait before bootstrapping again?
*/
void tox_callback_self_connection_status(Tox *tox, tox_self_connection_status_cb *function, void *user_data);
/**
* Return the time in milliseconds before tox_iteration() should be called again
* for optimal performance.
*/
uint32_t tox_iteration_interval(const Tox *tox);
/**
* The main loop that needs to be run in intervals of tox_iteration_interval()
* milliseconds.
*/
void tox_iterate(Tox *tox);
/*******************************************************************************
*
* :: Internal client information (Tox address/id)
*
******************************************************************************/
/**
* Writes the Tox friend address of the client to a byte array. The address is
* not in human-readable format. If a client wants to display the address,
* formatting is required.
*
* @param address A memory region of at least TOX_ADDRESS_SIZE bytes. If this
* parameter is NULL, this function has no effect.
* @see TOX_ADDRESS_SIZE for the address format.
*/
void tox_self_get_address(const Tox *tox, uint8_t *address);
/**
* Set the 4-byte nospam part of the address.
*
* @param nospam Any 32 bit unsigned integer.
*/
void tox_self_set_nospam(Tox *tox, uint32_t nospam);
/**
* Get the 4-byte nospam part of the address.
*/
uint32_t tox_self_get_nospam(const Tox *tox);
/**
* Copy the Tox Public Key (long term public key) from the Tox object.
*
* @param public_key A memory region of at least TOX_PUBLIC_KEY_SIZE bytes. If
* this parameter is NULL, this function has no effect.
*/
void tox_self_get_public_key(const Tox *tox, uint8_t *public_key);
/**
* Copy the secret key from the Tox object.
*
* @param secret_key A memory region of at least TOX_SECRET_KEY_SIZE bytes. If
* this parameter is NULL, this function has no effect.
*/
void tox_self_get_secret_key(const Tox *tox, uint8_t *secret_key);
/*******************************************************************************
*
* :: User-visible client information (nickname/status)
*
******************************************************************************/
/**
* Common error codes for all functions that set a piece of user-visible
* client information.
*/
typedef enum TOX_ERR_SET_INFO {
TOX_ERR_SET_INFO_OK,
TOX_ERR_SET_INFO_NULL,
/**
* Information length exceeded maximum permissible size.
*/
TOX_ERR_SET_INFO_TOO_LONG
} TOX_ERR_SET_INFO;
/**
* Set the nickname for the Tox client.
*
* Nickname length cannot exceed TOX_MAX_NAME_LENGTH. If length is 0, the name
* parameter is ignored (it can be NULL), and the nickname is set back to empty.
*
* @param name A byte array containing the new nickname.
* @param length The size of the name byte array.
*
* @return true on success.
*/
bool tox_self_set_name(Tox *tox, const uint8_t *name, size_t length, TOX_ERR_SET_INFO *error);
/**
* Return the length of the current nickname as passed to tox_self_set_name.
*
* If no nickname was set before calling this function, the name is empty,
* and this function returns 0.
*
* @see threading for concurrency implications.
*/
size_t tox_self_get_name_size(const Tox *tox);
/**
* Write the nickname set by tox_self_set_name to a byte array.
*
* If no nickname was set before calling this function, the name is empty,
* and this function has no effect.
*
* Call tox_self_get_name_size to find out how much memory to allocate for
* the result.
*
* @param name A valid memory location large enough to hold the nickname.
* If this parameter is NULL, the function has no effect.
*/
void tox_self_get_name(const Tox *tox, uint8_t *name);
/**
* Set the client's status message.
*
* Status message length cannot exceed TOX_MAX_STATUS_MESSAGE_LENGTH. If
* length is 0, the status parameter is ignored (it can be NULL), and the
* user status is set back to empty.
*/
bool tox_self_set_status_message(Tox *tox, const uint8_t *status, size_t length, TOX_ERR_SET_INFO *error);
/**
* Return the length of the current status message as passed to
* tox_self_set_status_message.
*
* If no status message was set before calling this function, the status
* is empty, and this function returns 0.
*
* @see threading for concurrency implications.
*/
size_t tox_self_get_status_message_size(const Tox *tox);
/**
* Write the status message set by tox_self_set_status_message to a byte array.
*
* If no status message was set before calling this function, the status is
* empty, and this function has no effect.
*
* Call tox_self_status_message_size to find out how much memory to allocate for
* the result.
*
* @param status A valid memory location large enough to hold the status message.
* If this parameter is NULL, the function has no effect.
*/
void tox_self_get_status_message(const Tox *tox, uint8_t *status);
/**
* Set the client's user status.
*
* @param user_status One of the user statuses listed in the enumeration above.
*/
void tox_self_set_status(Tox *tox, TOX_USER_STATUS user_status);
/**
* Returns the client's user status.
*/
TOX_USER_STATUS tox_self_get_status(const Tox *tox);
/*******************************************************************************
*
* :: Friend list management
*
******************************************************************************/
typedef enum TOX_ERR_FRIEND_ADD {
TOX_ERR_FRIEND_ADD_OK,
TOX_ERR_FRIEND_ADD_NULL,
/**
* The length of the friend request message exceeded
* TOX_MAX_FRIEND_REQUEST_LENGTH.
*/
TOX_ERR_FRIEND_ADD_TOO_LONG,
/**
* The friend request message was empty. This, and the TOO_LONG code will
* never be returned from tox_friend_add_norequest.
*/
TOX_ERR_FRIEND_ADD_NO_MESSAGE,
/**
* The friend address belongs to the sending client.
*/
TOX_ERR_FRIEND_ADD_OWN_KEY,
/**
* A friend request has already been sent, or the address belongs to a friend
* that is already on the friend list.
*/
TOX_ERR_FRIEND_ADD_ALREADY_SENT,
/**
* The friend address checksum failed.
*/
TOX_ERR_FRIEND_ADD_BAD_CHECKSUM,
/**
* The friend was already there, but the nospam value was different.
*/
TOX_ERR_FRIEND_ADD_SET_NEW_NOSPAM,
/**
* A memory allocation failed when trying to increase the friend list size.
*/
TOX_ERR_FRIEND_ADD_MALLOC
} TOX_ERR_FRIEND_ADD;
/**
* Add a friend to the friend list and send a friend request.
*
* A friend request message must be at least 1 byte long and at most
* TOX_MAX_FRIEND_REQUEST_LENGTH.
*
* Friend numbers are unique identifiers used in all functions that operate on
* friends. Once added, a friend number is stable for the lifetime of the Tox
* object. After saving the state and reloading it, the friend numbers may not
* be the same as before. Deleting a friend creates a gap in the friend number
* set, which is filled by the next adding of a friend. Any pattern in friend
* numbers should not be relied on.
*
* If more than INT32_MAX friends are added, this function causes undefined
* behaviour.
*
* @param address The address of the friend (returned by tox_self_get_address of
* the friend you wish to add) it must be TOX_ADDRESS_SIZE bytes.
* @param message The message that will be sent along with the friend request.
* @param length The length of the data byte array.
*
* @return the friend number on success, UINT32_MAX on failure.
*/
uint32_t tox_friend_add(Tox *tox, const uint8_t *address, const uint8_t *message, size_t length,
TOX_ERR_FRIEND_ADD *error);
/**
* Add a friend without sending a friend request.
*
* This function is used to add a friend in response to a friend request. If the
* client receives a friend request, it can be reasonably sure that the other
* client added this client as a friend, eliminating the need for a friend
* request.
*
* This function is also useful in a situation where both instances are
* controlled by the same entity, so that this entity can perform the mutual
* friend adding. In this case, there is no need for a friend request, either.
*
* @param public_key A byte array of length TOX_PUBLIC_KEY_SIZE containing the
* Public Key (not the Address) of the friend to add.
*
* @return the friend number on success, UINT32_MAX on failure.
* @see tox_friend_add for a more detailed description of friend numbers.
*/
uint32_t tox_friend_add_norequest(Tox *tox, const uint8_t *public_key, TOX_ERR_FRIEND_ADD *error);
typedef enum TOX_ERR_FRIEND_DELETE {
TOX_ERR_FRIEND_DELETE_OK,
/**
* There was no friend with the given friend number. No friends were deleted.
*/
TOX_ERR_FRIEND_DELETE_FRIEND_NOT_FOUND
} TOX_ERR_FRIEND_DELETE;
/**
* Remove a friend from the friend list.
* Other friend numbers are unchanged.
* The friend_number can be reused by toxcore as a friend number for a new friend.
*
* This does not notify the friend of their deletion. After calling this
* function, this client will appear offline to the friend and no communication
* can occur between the two.
*
* @friend_number Friend number for the friend to be deleted.
*
* @return true on success.
* @see tox_friend_add for detailed description of friend numbers.
*/
bool tox_friend_delete(Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_DELETE *error);
/*******************************************************************************
*
* :: Friend list queries
*
******************************************************************************/
typedef enum TOX_ERR_FRIEND_BY_PUBLIC_KEY {
TOX_ERR_FRIEND_BY_PUBLIC_KEY_OK,
TOX_ERR_FRIEND_BY_PUBLIC_KEY_NULL,
/**
* No friend with the given Public Key exists on the friend list.
*/
TOX_ERR_FRIEND_BY_PUBLIC_KEY_NOT_FOUND
} TOX_ERR_FRIEND_BY_PUBLIC_KEY;
/**
* Return the friend number associated with that Public Key.
*
* @return the friend number on success, UINT32_MAX on failure.
* @param public_key A byte array containing the Public Key.
*/
uint32_t tox_friend_by_public_key(const Tox *tox, const uint8_t *public_key, TOX_ERR_FRIEND_BY_PUBLIC_KEY *error);
typedef enum TOX_ERR_FRIEND_GET_PUBLIC_KEY {
TOX_ERR_FRIEND_GET_PUBLIC_KEY_OK,
/**
* No friend with the given number exists on the friend list.
*/
TOX_ERR_FRIEND_GET_PUBLIC_KEY_FRIEND_NOT_FOUND
} TOX_ERR_FRIEND_GET_PUBLIC_KEY;
/**
* Copies the Public Key associated with a given friend number to a byte array.
*
* @param friend_number The friend number you want the Public Key of.
* @param public_key A memory region of at least TOX_PUBLIC_KEY_SIZE bytes. If
* this parameter is NULL, this function has no effect.
*
* @return true on success.
*/
bool tox_friend_get_public_key(const Tox *tox, uint32_t friend_number, uint8_t *public_key,
TOX_ERR_FRIEND_GET_PUBLIC_KEY *error);
/**
* Checks if a friend with the given friend number exists and returns true if
* it does.
*/
bool tox_friend_exists(const Tox *tox, uint32_t friend_number);
typedef enum TOX_ERR_FRIEND_GET_LAST_ONLINE {
TOX_ERR_FRIEND_GET_LAST_ONLINE_OK,
/**
* No friend with the given number exists on the friend list.
*/
TOX_ERR_FRIEND_GET_LAST_ONLINE_FRIEND_NOT_FOUND,
} TOX_ERR_FRIEND_GET_LAST_ONLINE;
/**
* Return a unix-time timestamp of the last time the friend associated with a given
* friend number was seen online. This function will return UINT64_MAX on error.
*
* @param friend_number The friend number you want to query.
*/
uint64_t tox_friend_get_last_online(const Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_GET_LAST_ONLINE *error);
/**
* Return the number of friends on the friend list.
*
* This function can be used to determine how much memory to allocate for
* tox_self_get_friend_list.
*/
size_t tox_self_get_friend_list_size(const Tox *tox);
/**
* Copy a list of valid friend numbers into an array.
*
* Call tox_self_get_friend_list_size to determine the number of elements to allocate.
*
* @param list A memory region with enough space to hold the friend list. If
* this parameter is NULL, this function has no effect.
*/
void tox_self_get_friend_list(const Tox *tox, uint32_t *list);
/*******************************************************************************
*
* :: Friend-specific state queries (can also be received through callbacks)
*
******************************************************************************/
/**
* Common error codes for friend state query functions.
*/
typedef enum TOX_ERR_FRIEND_QUERY {
TOX_ERR_FRIEND_QUERY_OK,
/**
* The pointer parameter for storing the query result (name, message) was
* NULL. Unlike the `_self_` variants of these functions, which have no effect
* when a parameter is NULL, these functions return an error in that case.
*/
TOX_ERR_FRIEND_QUERY_NULL,
/**
* The friend_number did not designate a valid friend.
*/
TOX_ERR_FRIEND_QUERY_FRIEND_NOT_FOUND
} TOX_ERR_FRIEND_QUERY;
/**
* Return the length of the friend's name. If the friend number is invalid, the
* return value is SIZE_MAX.
*
* The return value is equal to the `length` argument received by the last
* `friend_name` callback.
*/
size_t tox_friend_get_name_size(const Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_QUERY *error);
/**
* Write the name of the friend designated by the given friend number to a byte
* array.
*
* Call tox_friend_get_name_size to determine the allocation size for the `name`
* parameter.
*
* The data written to `name` is equal to the data received by the last
* `friend_name` callback.
*
* @param name A valid memory region large enough to store the friend's name.
*
* @return true on success.
*/
bool tox_friend_get_name(const Tox *tox, uint32_t friend_number, uint8_t *name, TOX_ERR_FRIEND_QUERY *error);
/**
* The function type for the `friend_name` callback.
*
* @param friend_number The friend number of the friend whose name changed.
* @param name A byte array containing the same data as
* tox_friend_get_name would write to its `name` parameter.
* @param length A value equal to the return value of
* tox_friend_get_name_size.
*/
typedef void tox_friend_name_cb(Tox *tox, uint32_t friend_number, const uint8_t *name, size_t length, void *user_data);
/**
* Set the callback for the `friend_name` event. Pass NULL to unset.
*
* This event is triggered when a friend changes their name.
*/
void tox_callback_friend_name(Tox *tox, tox_friend_name_cb *function, void *user_data);
/**
* Return the length of the friend's status message. If the friend number is
* invalid, the return value is SIZE_MAX.
*/
size_t tox_friend_get_status_message_size(const Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_QUERY *error);
/**
* Write the name of the friend designated by the given friend number to a byte
* array.
*
* Call tox_friend_get_name_size to determine the allocation size for the `name`
* parameter.
*
* The data written to `message` is equal to the data received by the last
* `friend_status_message` callback.
*
* @param name A valid memory region large enough to store the friend's name.
*/
bool tox_friend_get_status_message(const Tox *tox, uint32_t friend_number, uint8_t *message,
TOX_ERR_FRIEND_QUERY *error);
/**
* The function type for the `friend_status_message` callback.
*
* @param friend_number The friend number of the friend whose status message
* changed.
* @param message A byte array containing the same data as
* tox_friend_get_status_message would write to its `message` parameter.
* @param length A value equal to the return value of
* tox_friend_get_status_message_size.
*/
typedef void tox_friend_status_message_cb(Tox *tox, uint32_t friend_number, const uint8_t *message, size_t length,
void *user_data);
/**
* Set the callback for the `friend_status_message` event. Pass NULL to unset.
*
* This event is triggered when a friend changes their status message.
*/
void tox_callback_friend_status_message(Tox *tox, tox_friend_status_message_cb *function, void *user_data);
/**
* Return the friend's user status (away/busy/...). If the friend number is
* invalid, the return value is unspecified.
*
* The status returned is equal to the last status received through the
* `friend_status` callback.
*/
TOX_USER_STATUS tox_friend_get_status(const Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_QUERY *error);
/**
* The function type for the `friend_status` callback.
*
* @param friend_number The friend number of the friend whose user status
* changed.
* @param status The new user status.
*/
typedef void tox_friend_status_cb(Tox *tox, uint32_t friend_number, TOX_USER_STATUS status, void *user_data);
/**
* Set the callback for the `friend_status` event. Pass NULL to unset.
*
* This event is triggered when a friend changes their user status.
*/
void tox_callback_friend_status(Tox *tox, tox_friend_status_cb *function, void *user_data);
/**
* Check whether a friend is currently connected to this client.
*
* The result of this function is equal to the last value received by the
* `friend_connection_status` callback.
*
* @param friend_number The friend number for which to query the connection
* status.
*
* @return the friend's connection status as it was received through the
* `friend_connection_status` event.
*/
TOX_CONNECTION tox_friend_get_connection_status(const Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_QUERY *error);
/**
* The function type for the `friend_connection_status` callback.
*
* @param friend_number The friend number of the friend whose connection status
* changed.
* @param connection_status The result of calling
* tox_friend_get_connection_status on the passed friend_number.
*/
typedef void tox_friend_connection_status_cb(Tox *tox, uint32_t friend_number, TOX_CONNECTION connection_status,
void *user_data);
/**
* Set the callback for the `friend_connection_status` event. Pass NULL to
* unset.
*
* This event is triggered when a friend goes offline after having been online,
* or when a friend goes online.
*
* This callback is not called when adding friends. It is assumed that when
* adding friends, their connection status is offline.
*/
void tox_callback_friend_connection_status(Tox *tox, tox_friend_connection_status_cb *function, void *user_data);
/**
* Check whether a friend is currently typing a message.
*
* @param friend_number The friend number for which to query the typing status.
*
* @return true if the friend is typing.
* @return false if the friend is not typing, or the friend number was
* invalid. Inspect the error code to determine which case it is.
*/
bool tox_friend_get_typing(const Tox *tox, uint32_t friend_number, TOX_ERR_FRIEND_QUERY *error);
/**
* The function type for the `friend_typing` callback.
*
* @param friend_number The friend number of the friend who started or stopped
* typing.
* @param is_typing The result of calling tox_friend_get_typing on the passed
* friend_number.
*/
typedef void tox_friend_typing_cb(Tox *tox, uint32_t friend_number, bool is_typing, void *user_data);
/**
* Set the callback for the `friend_typing` event. Pass NULL to unset.
*
* This event is triggered when a friend starts or stops typing.
*/
void tox_callback_friend_typing(Tox *tox, tox_friend_typing_cb *function, void *user_data);
/*******************************************************************************
*
* :: Sending private messages
*
******************************************************************************/
typedef enum TOX_ERR_SET_TYPING {
TOX_ERR_SET_TYPING_OK,
/**
* The friend number did not designate a valid friend.
*/
TOX_ERR_SET_TYPING_FRIEND_NOT_FOUND
} TOX_ERR_SET_TYPING;
/**
* Set the client's typing status for a friend.
*
* The client is responsible for turning it on or off.
*
* @param friend_number The friend to which the client is typing a message.
* @param is_typing The typing status. True means the client is typing.
*
* @return true on success.
*/
bool tox_self_set_typing(Tox *tox, uint32_t friend_number, bool is_typing, TOX_ERR_SET_TYPING *error);
typedef enum TOX_ERR_FRIEND_SEND_MESSAGE {
TOX_ERR_FRIEND_SEND_MESSAGE_OK,
TOX_ERR_FRIEND_SEND_MESSAGE_NULL,
/**
* The friend number did not designate a valid friend.
*/
TOX_ERR_FRIEND_SEND_MESSAGE_FRIEND_NOT_FOUND,
/**
* This client is currently not connected to the friend.
*/
TOX_ERR_FRIEND_SEND_MESSAGE_FRIEND_NOT_CONNECTED,
/**
* An allocation error occurred while increasing the send queue size.
*/
TOX_ERR_FRIEND_SEND_MESSAGE_SENDQ,
/**
* Message length exceeded TOX_MAX_MESSAGE_LENGTH.
*/
TOX_ERR_FRIEND_SEND_MESSAGE_TOO_LONG,
/**
* Attempted to send a zero-length message.
*/
TOX_ERR_FRIEND_SEND_MESSAGE_EMPTY
} TOX_ERR_FRIEND_SEND_MESSAGE;
/**
* Send a text chat message to an online friend.
*
* This function creates a chat message packet and pushes it into the send
* queue.
*
* Type corresponds to the message type, for a list of valid types see TOX_MESSAGE_TYPE.
*
* The message length may not exceed TOX_MAX_MESSAGE_LENGTH. Larger messages
* must be split by the client and sent as separate messages. Other clients can
* then reassemble the fragments. Messages may not be empty.
*
* The return value of this function is the message ID. If a read receipt is
* received, the triggered `read_receipt` event will be passed this message ID.
*
* Message IDs are unique per friend. The first message ID is 0. Message IDs are
* incremented by 1 each time a message is sent. If UINT32_MAX messages were
* sent, the next message ID is 0.
*/
uint32_t tox_friend_send_message(Tox *tox, uint32_t friend_number, TOX_MESSAGE_TYPE type, const uint8_t *message,
size_t length, TOX_ERR_FRIEND_SEND_MESSAGE *error);
/**
* The function type for the `read_receipt` callback.
*
* @param friend_number The friend number of the friend who received the message.
* @param message_id The message ID as returned from tox_friend_send_message
* corresponding to the message sent.
*/
typedef void tox_friend_read_receipt_cb(Tox *tox, uint32_t friend_number, uint32_t message_id, void *user_data);
/**
* Set the callback for the `read_receipt` event. Pass NULL to unset.
*
* This event is triggered when the friend receives the message sent with
* tox_friend_send_message with the corresponding message ID.
*/
void tox_callback_friend_read_receipt(Tox *tox, tox_friend_read_receipt_cb *function, void *user_data);
/*******************************************************************************
*
* :: Receiving private messages and friend requests
*
******************************************************************************/
/**
* The function type for the `friend_request` callback.
*
* @param public_key The Public Key of the user who sent the friend request.
* @param message The message they sent along with the request.
* @param length The size of the message byte array.
*/
typedef void tox_friend_request_cb(Tox *tox, const uint8_t *public_key, const uint8_t *message, size_t length,
void *user_data);
/**
* Set the callback for the `friend_request` event. Pass NULL to unset.
*
* This event is triggered when a friend request is received.
*/
void tox_callback_friend_request(Tox *tox, tox_friend_request_cb *function, void *user_data);
/**
* The function type for the `friend_message` callback.
*
* @param friend_number The friend number of the friend who sent the message.
* @param type The message type, for a list of valid types see TOX_MESSAGE_TYPE.
* @param message The message data they sent.
* @param length The size of the message byte array.
*/
typedef void tox_friend_message_cb(Tox *tox, uint32_t friend_number, TOX_MESSAGE_TYPE type, const uint8_t *message,
size_t length, void *user_data);
/**
* Set the callback for the `friend_message` event. Pass NULL to unset.
*
* This event is triggered when a message from a friend is received.
*/
void tox_callback_friend_message(Tox *tox, tox_friend_message_cb *function, void *user_data);
/*******************************************************************************
*
* :: File transmission: common between sending and receiving
*
******************************************************************************/
enum TOX_FILE_KIND {
/**
* Arbitrary file data. Clients can choose to handle it based on the file name
* or magic or any other way they choose.
*/
TOX_FILE_KIND_DATA,
/**
* Avatar filename. This consists of tox_hash(image).
* Avatar data. This consists of the image data.
*
* Avatars can be sent at any time the client wishes. Generally, a client will
* send the avatar to a friend when that friend comes online, and to all
* friends when the avatar changed. A client can save some traffic by
* remembering which friend received the updated avatar already and only send
* it if the friend has an out of date avatar.
*
* Clients who receive avatar send requests can reject it (by sending
* TOX_FILE_CONTROL_CANCEL before any other controls), or accept it (by
* sending TOX_FILE_CONTROL_RESUME). The file_id of length TOX_HASH_LENGTH bytes
* (same length as TOX_FILE_ID_LENGTH) will contain the hash. A client can compare
* this hash with a saved hash and send TOX_FILE_CONTROL_CANCEL to terminate the avatar
* transfer if it matches.
*
* When file_size is set to 0 in the transfer request it means that the client has no
* avatar.
*/
TOX_FILE_KIND_AVATAR
};
/**
* Generates a cryptographic hash of the given data.
*
* This function may be used by clients for any purpose, but is provided
* primarily for validating cached avatars. This use is highly recommended to
* avoid unnecessary avatar updates.
*
* If hash is NULL or data is NULL while length is not 0 the function returns false,
* otherwise it returns true.
*
* This function is a wrapper to internal message-digest functions.
*
* @param hash A valid memory location the hash data. It must be at least
* TOX_HASH_LENGTH bytes in size.
* @param data Data to be hashed or NULL.
* @param length Size of the data array or 0.
*
* @return true if hash was not NULL.
*/
bool tox_hash(uint8_t *hash, const uint8_t *data, size_t length);
typedef enum TOX_FILE_CONTROL {
/**
* Sent by the receiving side to accept a file send request. Also sent after a
* TOX_FILE_CONTROL_PAUSE command to continue sending or receiving.
*/
TOX_FILE_CONTROL_RESUME,
/**
* Sent by clients to pause the file transfer. The initial state of a file
* transfer is always paused on the receiving side and running on the sending
* side. If both the sending and receiving side pause the transfer, then both
* need to send TOX_FILE_CONTROL_RESUME for the transfer to resume.
*/
TOX_FILE_CONTROL_PAUSE,
/**
* Sent by the receiving side to reject a file send request before any other
* commands are sent. Also sent by either side to terminate a file transfer.
*/
TOX_FILE_CONTROL_CANCEL
} TOX_FILE_CONTROL;
typedef enum TOX_ERR_FILE_CONTROL {
TOX_ERR_FILE_CONTROL_OK,
/**
* The friend_number passed did not designate a valid friend.
*/
TOX_ERR_FILE_CONTROL_FRIEND_NOT_FOUND,
/**
* This client is currently not connected to the friend.
*/
TOX_ERR_FILE_CONTROL_FRIEND_NOT_CONNECTED,
/**
* No file transfer with the given file number was found for the given friend.
*/
TOX_ERR_FILE_CONTROL_NOT_FOUND,
/**
* A RESUME control was sent, but the file transfer is running normally.
*/
TOX_ERR_FILE_CONTROL_NOT_PAUSED,
/**
* A RESUME control was sent, but the file transfer was paused by the other
* party. Only the party that paused the transfer can resume it.
*/
TOX_ERR_FILE_CONTROL_DENIED,
/**
* A PAUSE control was sent, but the file transfer was already paused.
*/
TOX_ERR_FILE_CONTROL_ALREADY_PAUSED,
/**
* Packet queue is full.
*/
TOX_ERR_FILE_CONTROL_SENDQ
} TOX_ERR_FILE_CONTROL;
/**
* Sends a file control command to a friend for a given file transfer.
*
* @param friend_number The friend number of the friend the file is being
* transferred to or received from.
* @param file_number The friend-specific identifier for the file transfer.
* @param control The control command to send.
*
* @return true on success.
*/
bool tox_file_control(Tox *tox, uint32_t friend_number, uint32_t file_number, TOX_FILE_CONTROL control,
TOX_ERR_FILE_CONTROL *error);
/**
* The function type for the `file_control` callback.
*
* When receiving TOX_FILE_CONTROL_CANCEL, the client should release the
* resources associated with the file number and consider the transfer failed.
*
* @param friend_number The friend number of the friend who is sending the file.
* @param file_number The friend-specific file number the data received is
* associated with.
* @param control The file control command received.
*/
typedef void tox_file_recv_control_cb(Tox *tox, uint32_t friend_number, uint32_t file_number, TOX_FILE_CONTROL control,
void *user_data);
/**
* Set the callback for the `file_control` event. Pass NULL to unset.
*
* This event is triggered when a file control command is received from a
* friend.
*/
void tox_callback_file_recv_control(Tox *tox, tox_file_recv_control_cb *function, void *user_data);
typedef enum TOX_ERR_FILE_SEEK {
TOX_ERR_FILE_SEEK_OK,
/**
* The friend_number passed did not designate a valid friend.
*/
TOX_ERR_FILE_SEEK_FRIEND_NOT_FOUND,
/**
* This client is currently not connected to the friend.
*/
TOX_ERR_FILE_SEEK_FRIEND_NOT_CONNECTED,
/**
* No file transfer with the given file number was found for the given friend.
*/
TOX_ERR_FILE_SEEK_NOT_FOUND,
/**
* File was not in a state where it could be seeked.
*/
TOX_ERR_FILE_SEEK_DENIED,
/**
* Seek position was invalid
*/
TOX_ERR_FILE_SEEK_INVALID_POSITION,
/**
* Packet queue is full.
*/
TOX_ERR_FILE_SEEK_SENDQ
} TOX_ERR_FILE_SEEK;
/**
* Sends a file seek control command to a friend for a given file transfer.
*
* This function can only be called to resume a file transfer right before
* TOX_FILE_CONTROL_RESUME is sent.
*
* @param friend_number The friend number of the friend the file is being
* received from.
* @param file_number The friend-specific identifier for the file transfer.
* @param position The position that the file should be seeked to.
*/
bool tox_file_seek(Tox *tox, uint32_t friend_number, uint32_t file_number, uint64_t position,
TOX_ERR_FILE_SEEK *error);
typedef enum TOX_ERR_FILE_GET {
TOX_ERR_FILE_GET_OK,
/**
* The friend_number passed did not designate a valid friend.
*/
TOX_ERR_FILE_GET_FRIEND_NOT_FOUND,
/**
* No file transfer with the given file number was found for the given friend.
*/
TOX_ERR_FILE_GET_NOT_FOUND
} TOX_ERR_FILE_GET;
/**
* Copy the file id associated to the file transfer to a byte array.
*
* @param friend_number The friend number of the friend the file is being
* transferred to.
* @param file_number The friend-specific identifier for the file transfer.
* @param file_id A memory region of at least TOX_FILE_ID_LENGTH bytes. If
* this parameter is NULL, this function has no effect.
*
* @return true on success.
*/
bool tox_file_get_file_id(const Tox *tox, uint32_t friend_number, uint32_t file_number, uint8_t *file_id,
TOX_ERR_FILE_GET *error);
/*******************************************************************************
*
* :: File transmission: sending
*
******************************************************************************/
typedef enum TOX_ERR_FILE_SEND {
TOX_ERR_FILE_SEND_OK,
TOX_ERR_FILE_SEND_NULL,
/**
* The friend_number passed did not designate a valid friend.
*/
TOX_ERR_FILE_SEND_FRIEND_NOT_FOUND,
/**
* This client is currently not connected to the friend.
*/
TOX_ERR_FILE_SEND_FRIEND_NOT_CONNECTED,
/**
* Filename length exceeded TOX_MAX_FILENAME_LENGTH bytes.
*/
TOX_ERR_FILE_SEND_NAME_TOO_LONG,
/**
* Too many ongoing transfers. The maximum number of concurrent file transfers
* is 256 per friend per direction (sending and receiving).
*/
TOX_ERR_FILE_SEND_TOO_MANY
} TOX_ERR_FILE_SEND;
/**
* Send a file transmission request.
*
* Maximum filename length is TOX_MAX_FILENAME_LENGTH bytes. The filename should generally just be
* a file name, not a path with directory names.
*
* If a non-zero file size is provided, this can be used by both sides to
* determine the sending progress. File size can be set to UINT64_MAX for streaming
* data of unknown size.
*
* File transmission occurs in chunks, which are requested through the
* `file_chunk_request` event.
*
* When a friend goes offline, all file transfers associated with the friend are
* purged from core.
*
* If the file contents change during a transfer, the behaviour is unspecified
* in general. What will actually happen depends on the mode in which the file
* was modified and how the client determines the file size.
*
* - If the file size was increased
* - and sending mode was streaming (file_size = UINT64_MAX), the behaviour will be as
* expected.
* - and sending mode was file (file_size != UINT64_MAX), the file_chunk_request
* callback will receive length = 0 when Core thinks the file transfer has
* finished. If the client remembers the file size as it was when sending
* the request, it will terminate the transfer normally. If the client
* re-reads the size, it will think the friend cancelled the transfer.
* - If the file size was decreased
* - and sending mode was streaming, the behaviour is as expected.
* - and sending mode was file, the callback will return 0 at the new
* (earlier) end-of-file, signalling to the friend that the transfer was
* cancelled.
* - If the file contents were modified
* - at a position before the current read, the two files (local and remote)
* will differ after the transfer terminates.
* - at a position after the current read, the file transfer will succeed as
* expected.
* - In either case, both sides will regard the transfer as complete and
* successful.
*
* @param friend_number The friend number of the friend the file send request
* should be sent to.
* @param kind The meaning of the file to be sent.
* @param file_size Size in bytes of the file the client wants to send, UINT64_MAX if
* unknown or streaming.
* @param file_id A file identifier of length TOX_FILE_ID_LENGTH that can be used to
* uniquely identify file transfers across core restarts. If NULL, a random one will
* be generated by core. It can then be obtained by using tox_file_get_file_id().
* @param filename Name of the file. Does not need to be the actual name. This
* name will be sent along with the file send request.
* @param filename_length Size in bytes of the filename.
*
* @return A file number used as an identifier in subsequent callbacks. This
* number is per friend. File numbers are reused after a transfer terminates.
* on failure, this function returns UINT32_MAX. Any pattern in file numbers
* should not be relied on.
*/
uint32_t tox_file_send(Tox *tox, uint32_t friend_number, uint32_t kind, uint64_t file_size, const uint8_t *file_id,
const uint8_t *filename, size_t filename_length, TOX_ERR_FILE_SEND *error);
typedef enum TOX_ERR_FILE_SEND_CHUNK {
TOX_ERR_FILE_SEND_CHUNK_OK,
/**
* The length parameter was non-zero, but data was NULL.
*/
TOX_ERR_FILE_SEND_CHUNK_NULL,
/**
* The friend_number passed did not designate a valid friend.
*/
TOX_ERR_FILE_SEND_CHUNK_FRIEND_NOT_FOUND,
/**
* This client is currently not connected to the friend.
*/
TOX_ERR_FILE_SEND_CHUNK_FRIEND_NOT_CONNECTED,
/**
* No file transfer with the given file number was found for the given friend.
*/
TOX_ERR_FILE_SEND_CHUNK_NOT_FOUND,
/**
* File transfer was found but isn't in a transferring state: (paused, done,
* broken, etc...) (happens only when not called from the request chunk callback).
*/
TOX_ERR_FILE_SEND_CHUNK_NOT_TRANSFERRING,
/**
* Attempted to send more or less data than requested. The requested data size is
* adjusted according to maximum transmission unit and the expected end of
* the file. Trying to send less or more than requested will return this error.
*/
TOX_ERR_FILE_SEND_CHUNK_INVALID_LENGTH,
/**
* Packet queue is full.
*/
TOX_ERR_FILE_SEND_CHUNK_SENDQ,
/**
* Position parameter was wrong.
*/
TOX_ERR_FILE_SEND_CHUNK_WRONG_POSITION
} TOX_ERR_FILE_SEND_CHUNK;
/**
* Send a chunk of file data to a friend.
*
* This function is called in response to the `file_chunk_request` callback. The
* length parameter should be equal to the one received though the callback.
* If it is zero, the transfer is assumed complete. For files with known size,
* Core will know that the transfer is complete after the last byte has been
* received, so it is not necessary (though not harmful) to send a zero-length
* chunk to terminate. For streams, core will know that the transfer is finished
* if a chunk with length less than the length requested in the callback is sent.
*
* @param friend_number The friend number of the receiving friend for this file.
* @param file_number The file transfer identifier returned by tox_file_send.
* @param position The file or stream position from which to continue reading.
* @return true on success.
*/
bool tox_file_send_chunk(Tox *tox, uint32_t friend_number, uint32_t file_number, uint64_t position, const uint8_t *data,
size_t length, TOX_ERR_FILE_SEND_CHUNK *error);
/**
* The function type for the `file_chunk_request` callback.
*
* If the length parameter is 0, the file transfer is finished, and the client's
* resources associated with the file number should be released. After a call
* with zero length, the file number can be reused for future file transfers.
*
* If the requested position is not equal to the client's idea of the current
* file or stream position, it will need to seek. In case of read-once streams,
* the client should keep the last read chunk so that a seek back can be
* supported. A seek-back only ever needs to read from the last requested chunk.
* This happens when a chunk was requested, but the send failed. A seek-back
* request can occur an arbitrary number of times for any given chunk.
*
* In response to receiving this callback, the client should call the function
* `tox_file_send_chunk` with the requested chunk. If the number of bytes sent
* through that function is zero, the file transfer is assumed complete. A
* client must send the full length of data requested with this callback.
*
* @param friend_number The friend number of the receiving friend for this file.
* @param file_number The file transfer identifier returned by tox_file_send.
* @param position The file or stream position from which to continue reading.
* @param length The number of bytes requested for the current chunk.
*/
typedef void tox_file_chunk_request_cb(Tox *tox, uint32_t friend_number, uint32_t file_number, uint64_t position,
size_t length, void *user_data);
/**
* Set the callback for the `file_chunk_request` event. Pass NULL to unset.
*/
void tox_callback_file_chunk_request(Tox *tox, tox_file_chunk_request_cb *function, void *user_data);
/*******************************************************************************
*
* :: File transmission: receiving
*
******************************************************************************/
/**
* The function type for the `file_receive` callback.
*
* Maximum filename length is TOX_MAX_FILENAME_LENGTH bytes. The filename should generally just be
* a file name, not a path with directory names.
*
* The client should acquire resources to be associated with the file transfer.
* Incoming file transfers start in the PAUSED state. After this callback
* returns, a transfer can be rejected by sending a TOX_FILE_CONTROL_CANCEL
* control command before any other control commands. It can be accepted by
* sending TOX_FILE_CONTROL_RESUME.
*
* @param friend_number The friend number of the friend who is sending the file
* transfer request.
* @param file_number The friend-specific file number the data received is
* associated with.
* @param kind The meaning of the file to be sent.
* @param file_size Size in bytes of the file about to be received from the client,
* UINT64_MAX if unknown or streaming.
* @param filename_length Size in bytes of the filename.
*/
typedef void tox_file_recv_cb(Tox *tox, uint32_t friend_number, uint32_t file_number, uint32_t kind,
uint64_t file_size, const uint8_t *filename, size_t filename_length, void *user_data);
/**
* Set the callback for the `file_receive` event. Pass NULL to unset.
*
* This event is triggered when a file transfer request is received.
*/
void tox_callback_file_recv(Tox *tox, tox_file_recv_cb *function, void *user_data);
/**
* The function type for the `file_receive_chunk` callback.
*
* This function is first called when a file transfer request is received, and
* subsequently when a chunk of file data for an accepted request was received.
*
* When length is 0, the transfer is finished and the client should release the
* resources it acquired for the transfer. After a call with length = 0, the
* file number can be reused for new file transfers.
*
* If position is equal to file_size (received in the file_receive callback)
* when the transfer finishes, the file was received completely. Otherwise, if
* file_size was UINT64_MAX, streaming ended successfully when length is 0.
*
* @param friend_number The friend number of the friend who is sending the file.
* @param file_number The friend-specific file number the data received is
* associated with.
* @param position The file position of the first byte in data.
* @param data A byte array containing the received chunk.
* @param length The length of the received chunk.
*/
typedef void tox_file_recv_chunk_cb(Tox *tox, uint32_t friend_number, uint32_t file_number, uint64_t position,
const uint8_t *data, size_t length, void *user_data);
/**
* Set the callback for the `file_receive_chunk` event. Pass NULL to unset.
*/
void tox_callback_file_recv_chunk(Tox *tox, tox_file_recv_chunk_cb *function, void *user_data);
/*******************************************************************************
*
* :: Group chat management
*
******************************************************************************/
/******************************************************************************
*
* :: Group chat message sending and receiving
*
******************************************************************************/
/* See: tox_old.h for now. */
/*******************************************************************************
*
* :: Low-level custom packet sending and receiving
*
******************************************************************************/
typedef enum TOX_ERR_FRIEND_CUSTOM_PACKET {
TOX_ERR_FRIEND_CUSTOM_PACKET_OK,
TOX_ERR_FRIEND_CUSTOM_PACKET_NULL,
/**
* The friend number did not designate a valid friend.
*/
TOX_ERR_FRIEND_CUSTOM_PACKET_FRIEND_NOT_FOUND,
/**
* This client is currently not connected to the friend.
*/
TOX_ERR_FRIEND_CUSTOM_PACKET_FRIEND_NOT_CONNECTED,
/**
* The first byte of data was not in the specified range for the packet type.
* This range is 200-254 for lossy, and 160-191 for lossless packets.
*/
TOX_ERR_FRIEND_CUSTOM_PACKET_INVALID,
/**
* Attempted to send an empty packet.
*/
TOX_ERR_FRIEND_CUSTOM_PACKET_EMPTY,
/**
* Packet data length exceeded TOX_MAX_CUSTOM_PACKET_SIZE.
*/
TOX_ERR_FRIEND_CUSTOM_PACKET_TOO_LONG,
/**
* Send queue size exceeded.
*/
TOX_ERR_FRIEND_CUSTOM_PACKET_SENDQ
} TOX_ERR_FRIEND_CUSTOM_PACKET;
/**
* Send a custom lossy packet to a friend.
*
* The first byte of data must be in the range 200-254. Maximum length of a
* custom packet is TOX_MAX_CUSTOM_PACKET_SIZE.
*
* Lossy packets behave like UDP packets, meaning they might never reach the
* other side or might arrive more than once (if someone is messing with the
* connection) or might arrive in the wrong order.
*
* Unless latency is an issue, it is recommended that you use lossless custom
* packets instead.
*
* @param friend_number The friend number of the friend this lossy packet
* should be sent to.
* @param data A byte array containing the packet data.
* @param length The length of the packet data byte array.
*
* @return true on success.
*/
bool tox_friend_send_lossy_packet(Tox *tox, uint32_t friend_number, const uint8_t *data, size_t length,
TOX_ERR_FRIEND_CUSTOM_PACKET *error);
/**
* The function type for the `friend_lossy_packet` callback.
*
* @param friend_number The friend number of the friend who sent a lossy packet.
* @param data A byte array containing the received packet data.
* @param length The length of the packet data byte array.
*/
typedef void tox_friend_lossy_packet_cb(Tox *tox, uint32_t friend_number, const uint8_t *data, size_t length,
void *user_data);
/**
* Set the callback for the `friend_lossy_packet` event. Pass NULL to unset.
*/
void tox_callback_friend_lossy_packet(Tox *tox, tox_friend_lossy_packet_cb *function, void *user_data);
/**
* Send a custom lossless packet to a friend.
*
* The first byte of data must be in the range 160-191. Maximum length of a
* custom packet is TOX_MAX_CUSTOM_PACKET_SIZE.
*
* Lossless packet behaviour is comparable to TCP (reliability, arrive in order)
* but with packets instead of a stream.
*
* @param friend_number The friend number of the friend this lossless packet
* should be sent to.
* @param data A byte array containing the packet data.
* @param length The length of the packet data byte array.
*
* @return true on success.
*/
bool tox_friend_send_lossless_packet(Tox *tox, uint32_t friend_number, const uint8_t *data, size_t length,
TOX_ERR_FRIEND_CUSTOM_PACKET *error);
/**
* The function type for the `friend_lossless_packet` callback.
*
* @param friend_number The friend number of the friend who sent the packet.
* @param data A byte array containing the received packet data.
* @param length The length of the packet data byte array.
*/
typedef void tox_friend_lossless_packet_cb(Tox *tox, uint32_t friend_number, const uint8_t *data, size_t length,
void *user_data);
/**
* Set the callback for the `friend_lossless_packet` event. Pass NULL to unset.
*/
void tox_callback_friend_lossless_packet(Tox *tox, tox_friend_lossless_packet_cb *function, void *user_data);
/*******************************************************************************
*
* :: Low-level network information
*
******************************************************************************/
/**
* Writes the temporary DHT public key of this instance to a byte array.
*
* This can be used in combination with an externally accessible IP address and
* the bound port (from tox_get_udp_port) to run a temporary bootstrap node.
*
* Be aware that every time a new instance is created, the DHT public key
* changes, meaning this cannot be used to run a permanent bootstrap node.
*
* @param dht_id A memory region of at least TOX_PUBLIC_KEY_SIZE bytes. If this
* parameter is NULL, this function has no effect.
*/
void tox_self_get_dht_id(const Tox *tox, uint8_t *dht_id);
typedef enum TOX_ERR_GET_PORT {
TOX_ERR_GET_PORT_OK,
/**
* The instance was not bound to any port.
*/
TOX_ERR_GET_PORT_NOT_BOUND
} TOX_ERR_GET_PORT;
/**
* Return the UDP port this Tox instance is bound to.
*/
uint16_t tox_self_get_udp_port(const Tox *tox, TOX_ERR_GET_PORT *error);
/**
* Return the TCP port this Tox instance is bound to. This is only relevant if
* the instance is acting as a TCP relay.
*/
uint16_t tox_self_get_tcp_port(const Tox *tox, TOX_ERR_GET_PORT *error);
#include "tox_old.h"
#ifdef __cplusplus
}
#endif
#endif
|