summaryrefslogtreecommitdiff
path: root/src/network/network_server.cpp
blob: 07171bbe21798cd339539826d697849fd3bd7936 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
/* $Id$ */

/** @file network_server.cpp Server part of the network protocol. */

#ifdef ENABLE_NETWORK

#include "../stdafx.h"
#include "../openttd.h" // XXX StringID
#include "../debug.h"
#include "../strings_func.h"
#include "network_internal.h"
#include "core/tcp.h"
#include "../vehicle_base.h"
#include "../vehicle_func.h"
#include "../date_func.h"
#include "network_server.h"
#include "network_udp.h"
#include "../console_func.h"
#include "../command_func.h"
#include "../saveload.h"
#include "../station_base.h"
#include "../variables.h"
#include "../genworld.h"
#include "../core/alloc_func.hpp"
#include "../fileio_func.h"
#include "../string_func.h"
#include "../company_base.h"
#include "../company_func.h"
#include "../company_gui.h"
#include "../settings_type.h"

#include "table/strings.h"

// This file handles all the server-commands

static void NetworkHandleCommandQueue(NetworkTCPSocketHandler* cs);

// **********
// Sending functions
//   DEF_SERVER_SEND_COMMAND has parameter: NetworkTCPSocketHandler *cs
// **********

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_CLIENT_INFO)(NetworkTCPSocketHandler *cs, NetworkClientInfo *ci)
{
	//
	// Packet: SERVER_CLIENT_INFO
	// Function: Sends info about a client
	// Data:
	//    uint16:  The index of the client (always unique on a server. 1 = server)
	//    uint8:  As which company the client is playing
	//    String: The name of the client
	//

	if (ci->client_index != NETWORK_EMPTY_INDEX) {
		Packet *p = NetworkSend_Init(PACKET_SERVER_CLIENT_INFO);
		p->Send_uint16(ci->client_index);
		p->Send_uint8 (ci->client_playas);
		p->Send_string(ci->client_name);

		cs->Send_Packet(p);
	}
}

DEF_SERVER_SEND_COMMAND(PACKET_SERVER_COMPANY_INFO)
{
//
	// Packet: SERVER_COMPANY_INFO
	// Function: Sends info about the companies
	// Data:
	//

	int i;

	Company *company;
	Packet *p;

	byte active = ActiveCompanyCount();

	if (active == 0) {
		p = NetworkSend_Init(PACKET_SERVER_COMPANY_INFO);

		p->Send_uint8 (NETWORK_COMPANY_INFO_VERSION);
		p->Send_uint8 (active);

		cs->Send_Packet(p);
		return;
	}

	NetworkPopulateCompanyInfo();

	FOR_ALL_COMPANIES(company) {
		p = NetworkSend_Init(PACKET_SERVER_COMPANY_INFO);

		p->Send_uint8 (NETWORK_COMPANY_INFO_VERSION);
		p->Send_uint8 (active);
		p->Send_uint8 (company->index);

		p->Send_string(_network_company_info[company->index].company_name);
		p->Send_uint32(_network_company_info[company->index].inaugurated_year);
		p->Send_uint64(_network_company_info[company->index].company_value);
		p->Send_uint64(_network_company_info[company->index].money);
		p->Send_uint64(_network_company_info[company->index].income);
		p->Send_uint16(_network_company_info[company->index].performance);

		/* Send 1 if there is a passord for the company else send 0 */
		p->Send_bool(!StrEmpty(_network_company_info[company->index].password));

		for (i = 0; i < NETWORK_VEHICLE_TYPES; i++) {
			p->Send_uint16(_network_company_info[company->index].num_vehicle[i]);
		}

		for (i = 0; i < NETWORK_STATION_TYPES; i++) {
			p->Send_uint16(_network_company_info[company->index].num_station[i]);
		}

		if (StrEmpty(_network_company_info[company->index].clients)) {
			p->Send_string("<none>");
		} else {
			p->Send_string(_network_company_info[company->index].clients);
		}

		cs->Send_Packet(p);
	}

	p = NetworkSend_Init(PACKET_SERVER_COMPANY_INFO);

	p->Send_uint8 (NETWORK_COMPANY_INFO_VERSION);
	p->Send_uint8 (0);

	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR)(NetworkTCPSocketHandler *cs, NetworkErrorCode error)
{
	//
	// Packet: SERVER_ERROR
	// Function: The client made an error
	// Data:
	//    uint8:  ErrorID (see network_data.h, NetworkErrorCode)
	//

	char str[100];
	Packet *p = NetworkSend_Init(PACKET_SERVER_ERROR);

	p->Send_uint8(error);
	cs->Send_Packet(p);

	GetNetworkErrorMsg(str, error, lastof(str));

	// Only send when the current client was in game
	if (cs->status > STATUS_AUTH) {
		NetworkTCPSocketHandler *new_cs;
		char client_name[NETWORK_CLIENT_NAME_LENGTH];

		NetworkGetClientName(client_name, sizeof(client_name), cs);

		DEBUG(net, 1, "'%s' made an error and has been disconnected. Reason: '%s'", client_name, str);

		NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, client_name, "%s", str);

		FOR_ALL_CLIENTS(new_cs) {
			if (new_cs->status > STATUS_AUTH && new_cs != cs) {
				// Some errors we filter to a more general error. Clients don't have to know the real
				//  reason a joining failed.
				if (error == NETWORK_ERROR_NOT_AUTHORIZED || error == NETWORK_ERROR_NOT_EXPECTED || error == NETWORK_ERROR_WRONG_REVISION)
					error = NETWORK_ERROR_ILLEGAL_PACKET;

				SEND_COMMAND(PACKET_SERVER_ERROR_QUIT)(new_cs, cs->index, error);
			}
		}
	} else {
		DEBUG(net, 1, "Client %d made an error and has been disconnected. Reason: '%s'", cs->index, str);
	}

	cs->has_quit = true;

	// Make sure the data get's there before we close the connection
	cs->Send_Packets();

	// The client made a mistake, so drop his connection now!
	NetworkCloseClient(cs);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_CHECK_NEWGRFS)(NetworkTCPSocketHandler *cs)
{
	//
	// Packet: PACKET_SERVER_CHECK_NEWGRFS
	// Function: Sends info about the used GRFs to the client
	// Data:
	//      uint8:  Amount of GRFs
	//    And then for each GRF:
	//      uint32: GRF ID
	// 16 * uint8:  MD5 checksum of the GRF
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_CHECK_NEWGRFS);
	const GRFConfig *c;
	uint grf_count = 0;

	for (c = _grfconfig; c != NULL; c = c->next) {
		if (!HasBit(c->flags, GCF_STATIC)) grf_count++;
	}

	p->Send_uint8 (grf_count);
	for (c = _grfconfig; c != NULL; c = c->next) {
		if (!HasBit(c->flags, GCF_STATIC)) cs->Send_GRFIdentifier(p, c);
	}

	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_NEED_PASSWORD)(NetworkTCPSocketHandler *cs, NetworkPasswordType type)
{
	//
	// Packet: SERVER_NEED_PASSWORD
	// Function: Indication to the client that the server needs a password
	// Data:
	//    uint8:  Type of password
	//

	/* Invalid packet when status is AUTH or higher */
	if (cs->status >= STATUS_AUTH) return;

	cs->status = STATUS_AUTHORIZING;

	Packet *p = NetworkSend_Init(PACKET_SERVER_NEED_PASSWORD);
	p->Send_uint8(type);
	p->Send_uint32(_settings_game.game_creation.generation_seed);
	p->Send_string(_settings_client.network.network_id);
	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND(PACKET_SERVER_WELCOME)
{
	//
	// Packet: SERVER_WELCOME
	// Function: The client is joined and ready to receive his map
	// Data:
	//    uint16:  Own ClientID
	//

	Packet *p;
	NetworkTCPSocketHandler *new_cs;

	// Invalid packet when status is AUTH or higher
	if (cs->status >= STATUS_AUTH) return;

	cs->status = STATUS_AUTH;
	_network_game_info.clients_on++;

	p = NetworkSend_Init(PACKET_SERVER_WELCOME);
	p->Send_uint16(cs->index);
	p->Send_uint32(_settings_game.game_creation.generation_seed);
	p->Send_string(_settings_client.network.network_id);
	cs->Send_Packet(p);

		// Transmit info about all the active clients
	FOR_ALL_CLIENTS(new_cs) {
		if (new_cs != cs && new_cs->status > STATUS_AUTH)
			SEND_COMMAND(PACKET_SERVER_CLIENT_INFO)(cs, DEREF_CLIENT_INFO(new_cs));
	}
	// Also send the info of the server
	SEND_COMMAND(PACKET_SERVER_CLIENT_INFO)(cs, NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX));
}

DEF_SERVER_SEND_COMMAND(PACKET_SERVER_WAIT)
{
	//
	// Packet: PACKET_SERVER_WAIT
	// Function: The client can not receive the map at the moment because
	//             someone else is already receiving the map
	// Data:
	//    uint8:  Clients awaiting map
	//
	int waiting = 0;
	NetworkTCPSocketHandler *new_cs;
	Packet *p;

	// Count how many clients are waiting in the queue
	FOR_ALL_CLIENTS(new_cs) {
		if (new_cs->status == STATUS_MAP_WAIT) waiting++;
	}

	p = NetworkSend_Init(PACKET_SERVER_WAIT);
	p->Send_uint8(waiting);
	cs->Send_Packet(p);
}

// This sends the map to the client
DEF_SERVER_SEND_COMMAND(PACKET_SERVER_MAP)
{
	//
	// Packet: SERVER_MAP
	// Function: Sends the map to the client, or a part of it (it is splitted in
	//   a lot of multiple packets)
	// Data:
	//    uint8:  packet-type (MAP_PACKET_START, MAP_PACKET_NORMAL and MAP_PACKET_END)
	//  if MAP_PACKET_START:
	//    uint32: The current FrameCounter
	//  if MAP_PACKET_NORMAL:
	//    piece of the map (till max-size of packet)
	//  if MAP_PACKET_END:
	//    nothing
	//

	static FILE *file_pointer;
	static uint sent_packets; // How many packets we did send succecfully last time

	if (cs->status < STATUS_AUTH) {
		// Illegal call, return error and ignore the packet
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_AUTHORIZED);
		return;
	}

	if (cs->status == STATUS_AUTH) {
		const char *filename = "network_server.tmp";
		Packet *p;

		// Make a dump of the current game
		if (SaveOrLoad(filename, SL_SAVE, AUTOSAVE_DIR) != SL_OK) usererror("network savedump failed");

		file_pointer = FioFOpenFile(filename, "rb", AUTOSAVE_DIR);
		fseek(file_pointer, 0, SEEK_END);

		if (ftell(file_pointer) == 0) usererror("network savedump failed - zero sized savegame?");

		// Now send the _frame_counter and how many packets are coming
		p = NetworkSend_Init(PACKET_SERVER_MAP);
		p->Send_uint8 (MAP_PACKET_START);
		p->Send_uint32(_frame_counter);
		p->Send_uint32(ftell(file_pointer));
		cs->Send_Packet(p);

		fseek(file_pointer, 0, SEEK_SET);

		sent_packets = 4; // We start with trying 4 packets

		cs->status = STATUS_MAP;
		/* Mark the start of download */
		cs->last_frame = _frame_counter;
		cs->last_frame_server = _frame_counter;
	}

	if (cs->status == STATUS_MAP) {
		uint i;
		int res;
		for (i = 0; i < sent_packets; i++) {
			Packet *p = NetworkSend_Init(PACKET_SERVER_MAP);
			p->Send_uint8(MAP_PACKET_NORMAL);
			res = (int)fread(p->buffer + p->size, 1, SEND_MTU - p->size, file_pointer);

			if (ferror(file_pointer)) usererror("Error reading temporary network savegame!");

			p->size += res;
			cs->Send_Packet(p);
			if (feof(file_pointer)) {
				// Done reading!
				Packet *p = NetworkSend_Init(PACKET_SERVER_MAP);
				p->Send_uint8(MAP_PACKET_END);
				cs->Send_Packet(p);

				// Set the status to DONE_MAP, no we will wait for the client
				//  to send it is ready (maybe that happens like never ;))
				cs->status = STATUS_DONE_MAP;
				fclose(file_pointer);

				{
					NetworkTCPSocketHandler *new_cs;
					bool new_map_client = false;
					// Check if there is a client waiting for receiving the map
					//  and start sending him the map
					FOR_ALL_CLIENTS(new_cs) {
						if (new_cs->status == STATUS_MAP_WAIT) {
							// Check if we already have a new client to send the map to
							if (!new_map_client) {
								// If not, this client will get the map
								new_cs->status = STATUS_AUTH;
								new_map_client = true;
								SEND_COMMAND(PACKET_SERVER_MAP)(new_cs);
							} else {
								// Else, send the other clients how many clients are in front of them
								SEND_COMMAND(PACKET_SERVER_WAIT)(new_cs);
							}
						}
					}
				}

				// There is no more data, so break the for
				break;
			}
		}

		// Send all packets (forced) and check if we have send it all
		cs->Send_Packets();
		if (cs->IsPacketQueueEmpty()) {
			// All are sent, increase the sent_packets
			sent_packets *= 2;
		} else {
			// Not everything is sent, decrease the sent_packets
			if (sent_packets > 1) sent_packets /= 2;
		}
	}
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_JOIN)(NetworkTCPSocketHandler *cs, uint16 client_index)
{
	//
	// Packet: SERVER_JOIN
	// Function: A client is joined (all active clients receive this after a
	//     PACKET_CLIENT_MAP_OK) Mostly what directly follows is a
	//     PACKET_SERVER_CLIENT_INFO
	// Data:
	//    uint16:  Client-Index
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_JOIN);

	p->Send_uint16(client_index);

	cs->Send_Packet(p);
}


DEF_SERVER_SEND_COMMAND(PACKET_SERVER_FRAME)
{
	//
	// Packet: SERVER_FRAME
	// Function: Sends the current frame-counter to the client
	// Data:
	//    uint32: Frame Counter
	//    uint32: Frame Counter Max (how far may the client walk before the server?)
	//    [uint32: general-seed-1]
	//    [uint32: general-seed-2]
	//      (last two depends on compile-settings, and are not default settings)
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_FRAME);
	p->Send_uint32(_frame_counter);
	p->Send_uint32(_frame_counter_max);
#ifdef ENABLE_NETWORK_SYNC_EVERY_FRAME
	p->Send_uint32(_sync_seed_1);
#ifdef NETWORK_SEND_DOUBLE_SEED
	p->Send_uint32(_sync_seed_2);
#endif
#endif
	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND(PACKET_SERVER_SYNC)
{
	//
	// Packet: SERVER_SYNC
	// Function: Sends a sync-check to the client
	// Data:
	//    uint32: Frame Counter
	//    uint32: General-seed-1
	//    [uint32: general-seed-2]
	//      (last one depends on compile-settings, and are not default settings)
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_SYNC);
	p->Send_uint32(_frame_counter);
	p->Send_uint32(_sync_seed_1);

#ifdef NETWORK_SEND_DOUBLE_SEED
	p->Send_uint32(_sync_seed_2);
#endif
	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_COMMAND)(NetworkTCPSocketHandler *cs, CommandPacket *cp)
{
	//
	// Packet: SERVER_COMMAND
	// Function: Sends a DoCommand to the client
	// Data:
	//    uint8:  CompanyID (0..MAX_COMPANIES-1)
	//    uint32: CommandID (see command.h)
	//    uint32: P1 (free variables used in DoCommand)
	//    uint32: P2
	//    uint32: Tile
	//    string: text
	//    uint8:  CallBackID (see callback_table.c)
	//    uint32: Frame of execution
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_COMMAND);

	p->Send_uint8 (cp->company);
	p->Send_uint32(cp->cmd);
	p->Send_uint32(cp->p1);
	p->Send_uint32(cp->p2);
	p->Send_uint32(cp->tile);
	p->Send_string(cp->text);
	p->Send_uint8 (cp->callback);
	p->Send_uint32(cp->frame);
	p->Send_bool  (cp->my_cmd);

	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_CHAT)(NetworkTCPSocketHandler *cs, NetworkAction action, uint16 client_index, bool self_send, const char *msg)
{
	//
	// Packet: SERVER_CHAT
	// Function: Sends a chat-packet to the client
	// Data:
	//    uint8:  ActionID (see network_data.h, NetworkAction)
	//    uint16:  Client-index
	//    String: Message (max NETWORK_CHAT_LENGTH)
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_CHAT);

	p->Send_uint8 (action);
	p->Send_uint16(client_index);
	p->Send_bool  (self_send);
	p->Send_string(msg);

	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_ERROR_QUIT)(NetworkTCPSocketHandler *cs, uint16 client_index, NetworkErrorCode errorno)
{
	//
	// Packet: SERVER_ERROR_QUIT
	// Function: One of the clients made an error and is quiting the game
	//      This packet informs the other clients of that.
	// Data:
	//    uint16:  Client-index
	//    uint8:  ErrorID (see network_data.h, NetworkErrorCode)
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_ERROR_QUIT);

	p->Send_uint16(client_index);
	p->Send_uint8 (errorno);

	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_QUIT)(NetworkTCPSocketHandler *cs, uint16 client_index, const char *leavemsg)
{
	//
	// Packet: SERVER_ERROR_QUIT
	// Function: A client left the game, and this packets informs the other clients
	//      of that.
	// Data:
	//    uint16:  Client-index
	//    String: leave-message
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_QUIT);

	p->Send_uint16(client_index);
	p->Send_string(leavemsg);

	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND(PACKET_SERVER_SHUTDOWN)
{
	//
	// Packet: SERVER_SHUTDOWN
	// Function: Let the clients know that the server is closing
	// Data:
	//     <none>
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_SHUTDOWN);
	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND(PACKET_SERVER_NEWGAME)
{
	//
	// Packet: PACKET_SERVER_NEWGAME
	// Function: Let the clients know that the server is loading a new map
	// Data:
	//     <none>
	//

	Packet *p = NetworkSend_Init(PACKET_SERVER_NEWGAME);
	cs->Send_Packet(p);
}

DEF_SERVER_SEND_COMMAND_PARAM(PACKET_SERVER_RCON)(NetworkTCPSocketHandler *cs, uint16 color, const char *command)
{
	Packet *p = NetworkSend_Init(PACKET_SERVER_RCON);

	p->Send_uint16(color);
	p->Send_string(command);
	cs->Send_Packet(p);
}

// **********
// Receiving functions
//   DEF_SERVER_RECEIVE_COMMAND has parameter: NetworkTCPSocketHandler *cs, Packet *p
// **********

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_COMPANY_INFO)
{
	SEND_COMMAND(PACKET_SERVER_COMPANY_INFO)(cs);
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED)
{
	if (cs->status != STATUS_INACTIVE) {
		/* Illegal call, return error and ignore the packet */
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
		return;
	}

	NetworkClientInfo *ci = DEREF_CLIENT_INFO(cs);

	/* We now want a password from the client else we do not allow him in! */
	if (!StrEmpty(_settings_client.network.server_password)) {
		SEND_COMMAND(PACKET_SERVER_NEED_PASSWORD)(cs, NETWORK_GAME_PASSWORD);
	} else {
		if (IsValidCompanyID(ci->client_playas) && _network_company_info[ci->client_playas].password[0] != '\0') {
			SEND_COMMAND(PACKET_SERVER_NEED_PASSWORD)(cs, NETWORK_COMPANY_PASSWORD);
		} else {
			SEND_COMMAND(PACKET_SERVER_WELCOME)(cs);
		}
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_JOIN)
{
	if (cs->status != STATUS_INACTIVE) {
		/* Illegal call, return error and ignore the packet */
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
		return;
	}

	char name[NETWORK_CLIENT_NAME_LENGTH];
	char unique_id[NETWORK_UNIQUE_ID_LENGTH];
	NetworkClientInfo *ci;
	CompanyID playas;
	NetworkLanguage client_lang;
	char client_revision[NETWORK_REVISION_LENGTH];

	p->Recv_string(client_revision, sizeof(client_revision));

	// Check if the client has revision control enabled
	if (!IsNetworkCompatibleVersion(client_revision)) {
		// Different revisions!!
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_WRONG_REVISION);
		return;
	}

	p->Recv_string(name, sizeof(name));
	playas = (Owner)p->Recv_uint8();
	client_lang = (NetworkLanguage)p->Recv_uint8();
	p->Recv_string(unique_id, sizeof(unique_id));

	if (cs->has_quit) return;

	// join another company does not affect these values
	switch (playas) {
		case COMPANY_NEW_COMPANY: /* New company */
			if (ActiveCompanyCount() >= _settings_client.network.max_companies) {
				SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_FULL);
				return;
			}
			break;
		case COMPANY_SPECTATOR: /* Spectator */
			if (NetworkSpectatorCount() >= _settings_client.network.max_spectators) {
				SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_FULL);
				return;
			}
			break;
		default: /* Join another company (companies 1-8 (index 0-7)) */
			if (!IsValidCompanyID(playas)) {
				SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_COMPANY_MISMATCH);
				return;
			}
			break;
	}

	// We need a valid name.. make it Player
	if (StrEmpty(name)) ttd_strlcpy(name, "Player", sizeof(name));

	if (!NetworkFindName(name)) { // Change name if duplicate
		// We could not create a name for this client
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NAME_IN_USE);
		return;
	}

	ci = DEREF_CLIENT_INFO(cs);

	ttd_strlcpy(ci->client_name, name, sizeof(ci->client_name));
	ttd_strlcpy(ci->unique_id, unique_id, sizeof(ci->unique_id));
	ci->client_playas = playas;
	ci->client_lang = client_lang;

	/* Make sure companies to which people try to join are not autocleaned */
	if (IsValidCompanyID(playas)) _network_company_info[playas].months_empty = 0;

	if (_grfconfig == NULL) {
		RECEIVE_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED)(cs, NULL);
	} else {
		SEND_COMMAND(PACKET_SERVER_CHECK_NEWGRFS)(cs);
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_PASSWORD)
{
	NetworkPasswordType type;
	char password[NETWORK_PASSWORD_LENGTH];
	const NetworkClientInfo *ci;

	type = (NetworkPasswordType)p->Recv_uint8();
	p->Recv_string(password, sizeof(password));

	if (cs->status == STATUS_AUTHORIZING && type == NETWORK_GAME_PASSWORD) {
		// Check game-password
		if (strcmp(password, _settings_client.network.server_password) != 0) {
			// Password is invalid
			SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_WRONG_PASSWORD);
			return;
		}

		ci = DEREF_CLIENT_INFO(cs);

		if (IsValidCompanyID(ci->client_playas) && _network_company_info[ci->client_playas].password[0] != '\0') {
			SEND_COMMAND(PACKET_SERVER_NEED_PASSWORD)(cs, NETWORK_COMPANY_PASSWORD);
			return;
		}

		// Valid password, allow user
		SEND_COMMAND(PACKET_SERVER_WELCOME)(cs);
		return;
	} else if (cs->status == STATUS_AUTHORIZING && type == NETWORK_COMPANY_PASSWORD) {
		ci = DEREF_CLIENT_INFO(cs);

		if (strcmp(password, _network_company_info[ci->client_playas].password) != 0) {
			// Password is invalid
			SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_WRONG_PASSWORD);
			return;
		}

		SEND_COMMAND(PACKET_SERVER_WELCOME)(cs);
		return;
	}


	SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
	return;
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_GETMAP)
{
	NetworkTCPSocketHandler *new_cs;

	// The client was never joined.. so this is impossible, right?
	//  Ignore the packet, give the client a warning, and close his connection
	if (cs->status < STATUS_AUTH || cs->has_quit) {
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_AUTHORIZED);
		return;
	}

	// Check if someone else is receiving the map
	FOR_ALL_CLIENTS(new_cs) {
		if (new_cs->status == STATUS_MAP) {
			// Tell the new client to wait
			cs->status = STATUS_MAP_WAIT;
			SEND_COMMAND(PACKET_SERVER_WAIT)(cs);
			return;
		}
	}

	// We receive a request to upload the map.. give it to the client!
	SEND_COMMAND(PACKET_SERVER_MAP)(cs);
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_MAP_OK)
{
	// Client has the map, now start syncing
	if (cs->status == STATUS_DONE_MAP && !cs->has_quit) {
		char client_name[NETWORK_CLIENT_NAME_LENGTH];
		NetworkTCPSocketHandler *new_cs;

		NetworkGetClientName(client_name, sizeof(client_name), cs);

		NetworkTextMessage(NETWORK_ACTION_JOIN, CC_DEFAULT, false, client_name, "");

		// Mark the client as pre-active, and wait for an ACK
		//  so we know he is done loading and in sync with us
		cs->status = STATUS_PRE_ACTIVE;
		NetworkHandleCommandQueue(cs);
		SEND_COMMAND(PACKET_SERVER_FRAME)(cs);
		SEND_COMMAND(PACKET_SERVER_SYNC)(cs);

		// This is the frame the client receives
		//  we need it later on to make sure the client is not too slow
		cs->last_frame = _frame_counter;
		cs->last_frame_server = _frame_counter;

		FOR_ALL_CLIENTS(new_cs) {
			if (new_cs->status > STATUS_AUTH) {
				SEND_COMMAND(PACKET_SERVER_CLIENT_INFO)(new_cs, DEREF_CLIENT_INFO(cs));
				SEND_COMMAND(PACKET_SERVER_JOIN)(new_cs, cs->index);
			}
		}

		if (_settings_client.network.pause_on_join) {
			/* Now pause the game till the client is in sync */
			DoCommandP(0, 1, 0, NULL, CMD_PAUSE);

			NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game paused (incoming client)", NETWORK_SERVER_INDEX);
		}
	} else {
		// Wrong status for this packet, give a warning to client, and close connection
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
	}
}

/** Enforce the command flags.
 * Eg a server-only command can only be executed by a server, etc.
 * @param *cp the commandpacket that is going to be checked
 * @param *ci client information for debugging output to console
 */
static bool CheckCommandFlags(const CommandPacket *cp, const NetworkClientInfo *ci)
{
	byte flags = GetCommandFlags(cp->cmd);

	if (flags & CMD_SERVER && ci->client_index != NETWORK_SERVER_INDEX) {
		IConsolePrintF(CC_ERROR, "WARNING: server only command from client %d (IP: %s), kicking...", ci->client_index, GetClientIP(ci));
		return false;
	}

	if (flags & CMD_OFFLINE) {
		IConsolePrintF(CC_ERROR, "WARNING: offline only command from client %d (IP: %s), kicking...", ci->client_index, GetClientIP(ci));
		return false;
	}

	if (cp->cmd != CMD_COMPANY_CTRL && !IsValidCompanyID(cp->company) && ci->client_index != NETWORK_SERVER_INDEX) {
		IConsolePrintF(CC_ERROR, "WARNING: spectator issueing command from client %d (IP: %s), kicking...", ci->client_index, GetClientIP(ci));
		return false;
	}

	return true;
}

/** The client has done a command and wants us to handle it
 * @param *cs the connected client that has sent the command
 * @param *p the packet in which the command was sent
 */
DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_COMMAND)
{
	NetworkTCPSocketHandler *new_cs;
	const NetworkClientInfo *ci;
	byte callback;

	// The client was never joined.. so this is impossible, right?
	//  Ignore the packet, give the client a warning, and close his connection
	if (cs->status < STATUS_DONE_MAP || cs->has_quit) {
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
		return;
	}

	CommandPacket *cp = MallocT<CommandPacket>(1);
	cp->company = (CompanyID)p->Recv_uint8();
	cp->cmd     = p->Recv_uint32();
	cp->p1      = p->Recv_uint32();
	cp->p2      = p->Recv_uint32();
	cp->tile    = p->Recv_uint32();
	p->Recv_string(cp->text, lengthof(cp->text));

	callback = p->Recv_uint8();

	if (cs->has_quit) {
		free(cp);
		return;
	}

	ci = DEREF_CLIENT_INFO(cs);

	/* Check if cp->cmd is valid */
	if (!IsValidCommand(cp->cmd)) {
		IConsolePrintF(CC_ERROR, "WARNING: invalid command from client %d (IP: %s).", ci->client_index, GetClientIP(ci));
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
		free(cp);
		return;
	}

	if (!CheckCommandFlags(cp, ci)) {
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_KICKED);
		free(cp);
		return;
	}

	/** Only CMD_COMPANY_CTRL is always allowed, for the rest, playas needs
	 * to match the company in the packet. If it doesn't, the client has done
	 * something pretty naughty (or a bug), and will be kicked
	 */
	if (!(cp->cmd == CMD_COMPANY_CTRL && cp->p1 == 0 && ci->client_playas == COMPANY_NEW_COMPANY) && ci->client_playas != cp->company) {
		IConsolePrintF(CC_ERROR, "WARNING: client %d (IP: %s) tried to execute a command as company %d, kicking...",
		               ci->client_playas + 1, GetClientIP(ci), cp->company + 1);
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_COMPANY_MISMATCH);
		free(cp);
		return;
	}

	/** @todo CMD_COMPANY_CTRL with p1 = 0 announces a new company to the server. To give the
	 * company the correct ID, the server injects p2 and executes the command. Any other p1
	 * is prohibited. Pretty ugly and should be redone together with its function.
	 * @see CmdCompanyCtrl()
	 */
	if (cp->cmd == CMD_COMPANY_CTRL) {
		if (cp->p1 != 0) {
			SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_CHEATER);
			free(cp);
			return;
		}

		/* XXX - Execute the command as a valid company. Normally this would be done by a
		 * spectator, but that is not allowed any commands. So do an impersonation. The drawback
		 * of this is that the first company's last_built_tile is also updated... */
		cp->company = OWNER_BEGIN;
		cp->p2 = cs - _clients; // XXX - UGLY! p2 is mis-used to get the client-id in CmdCompanyCtrl
	}

	// The frame can be executed in the same frame as the next frame-packet
	//  That frame just before that frame is saved in _frame_counter_max
	cp->frame = _frame_counter_max + 1;
	cp->next  = NULL;

	// Queue the command for the clients (are send at the end of the frame
	//   if they can handle it ;))
	FOR_ALL_CLIENTS(new_cs) {
		if (new_cs->status >= STATUS_MAP) {
			// Callbacks are only send back to the client who sent them in the
			//  first place. This filters that out.
			cp->callback = (new_cs != cs) ? 0 : callback;
			cp->my_cmd = (new_cs == cs);
			NetworkAddCommandQueue(new_cs, cp);
		}
	}

	cp->callback = 0;
	cp->my_cmd = false;
	// Queue the command on the server
	if (_local_command_queue == NULL) {
		_local_command_queue = cp;
	} else {
		// Find last packet
		CommandPacket *c = _local_command_queue;
		while (c->next != NULL) c = c->next;
		c->next = cp;
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_ERROR)
{
	// This packets means a client noticed an error and is reporting this
	//  to us. Display the error and report it to the other clients
	NetworkTCPSocketHandler *new_cs;
	char str[100];
	char client_name[NETWORK_CLIENT_NAME_LENGTH];
	NetworkErrorCode errorno = (NetworkErrorCode)p->Recv_uint8();

	// The client was never joined.. thank the client for the packet, but ignore it
	if (cs->status < STATUS_DONE_MAP || cs->has_quit) {
		cs->has_quit = true;
		return;
	}

	NetworkGetClientName(client_name, sizeof(client_name), cs);

	GetNetworkErrorMsg(str, errorno, lastof(str));

	DEBUG(net, 2, "'%s' reported an error and is closing its connection (%s)", client_name, str);

	NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, client_name, "%s", str);

	FOR_ALL_CLIENTS(new_cs) {
		if (new_cs->status > STATUS_AUTH) {
			SEND_COMMAND(PACKET_SERVER_ERROR_QUIT)(new_cs, cs->index, errorno);
		}
	}

	cs->has_quit = true;
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_QUIT)
{
	// The client wants to leave. Display this and report it to the other
	//  clients.
	NetworkTCPSocketHandler *new_cs;
	char str[100];
	char client_name[NETWORK_CLIENT_NAME_LENGTH];

	// The client was never joined.. thank the client for the packet, but ignore it
	if (cs->status < STATUS_DONE_MAP || cs->has_quit) {
		cs->has_quit = true;
		return;
	}

	p->Recv_string(str, lengthof(str));

	NetworkGetClientName(client_name, sizeof(client_name), cs);

	NetworkTextMessage(NETWORK_ACTION_LEAVE, CC_DEFAULT, false, client_name, "%s", str);

	FOR_ALL_CLIENTS(new_cs) {
		if (new_cs->status > STATUS_AUTH) {
			SEND_COMMAND(PACKET_SERVER_QUIT)(new_cs, cs->index, str);
		}
	}

	cs->has_quit = true;
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_ACK)
{
	if (cs->status < STATUS_AUTH) {
		/* Illegal call, return error and ignore the packet */
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_AUTHORIZED);
		return;
	}

	uint32 frame = p->Recv_uint32();

	/* The client is trying to catch up with the server */
	if (cs->status == STATUS_PRE_ACTIVE) {
		/* The client is not yet catched up? */
		if (frame + DAY_TICKS < _frame_counter) return;

		/* Now he is! Unpause the game */
		cs->status = STATUS_ACTIVE;

		if (_settings_client.network.pause_on_join) {
			DoCommandP(0, 0, 0, NULL, CMD_PAUSE);
			NetworkServerSendChat(NETWORK_ACTION_SERVER_MESSAGE, DESTTYPE_BROADCAST, 0, "Game unpaused (client connected)", NETWORK_SERVER_INDEX);
		}

		CheckMinActiveClients();

		/* Execute script for, e.g. MOTD */
		IConsoleCmdExec("exec scripts/on_server_connect.scr 0");
	}

	// The client received the frame, make note of it
	cs->last_frame = frame;
	// With those 2 values we can calculate the lag realtime
	cs->last_frame_server = _frame_counter;
}



void NetworkServerSendChat(NetworkAction action, DestType desttype, int dest, const char *msg, uint16 from_index)
{
	NetworkTCPSocketHandler *cs;
	const NetworkClientInfo *ci, *ci_own, *ci_to;

	switch (desttype) {
	case DESTTYPE_CLIENT:
		/* Are we sending to the server? */
		if (dest == NETWORK_SERVER_INDEX) {
			ci = NetworkFindClientInfoFromIndex(from_index);
			/* Display the text locally, and that is it */
			if (ci != NULL)
				NetworkTextMessage(action, (ConsoleColour)GetDrawStringCompanyColor(ci->client_playas), false, ci->client_name, "%s", msg);
		} else {
			/* Else find the client to send the message to */
			FOR_ALL_CLIENTS(cs) {
				if (cs->index == dest) {
					SEND_COMMAND(PACKET_SERVER_CHAT)(cs, action, from_index, false, msg);
					break;
				}
			}
		}

		// Display the message locally (so you know you have sent it)
		if (from_index != dest) {
			if (from_index == NETWORK_SERVER_INDEX) {
				ci = NetworkFindClientInfoFromIndex(from_index);
				ci_to = NetworkFindClientInfoFromIndex(dest);
				if (ci != NULL && ci_to != NULL)
					NetworkTextMessage(action, (ConsoleColour)GetDrawStringCompanyColor(ci->client_playas), true, ci_to->client_name, "%s", msg);
			} else {
				FOR_ALL_CLIENTS(cs) {
					if (cs->index == from_index) {
						SEND_COMMAND(PACKET_SERVER_CHAT)(cs, action, dest, true, msg);
						break;
					}
				}
			}
		}
		break;
	case DESTTYPE_TEAM: {
		bool show_local = true; // If this is false, the message is already displayed
														// on the client who did sent it.
		/* Find all clients that belong to this company */
		ci_to = NULL;
		FOR_ALL_CLIENTS(cs) {
			ci = DEREF_CLIENT_INFO(cs);
			if (ci->client_playas == dest) {
				SEND_COMMAND(PACKET_SERVER_CHAT)(cs, action, from_index, false, msg);
				if (cs->index == from_index) show_local = false;
				ci_to = ci; // Remember a client that is in the company for company-name
			}
		}

		ci = NetworkFindClientInfoFromIndex(from_index);
		ci_own = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
		if (ci != NULL && ci_own != NULL && ci_own->client_playas == dest) {
			NetworkTextMessage(action, (ConsoleColour)GetDrawStringCompanyColor(ci->client_playas), false, ci->client_name, "%s", msg);
			if (from_index == NETWORK_SERVER_INDEX) show_local = false;
			ci_to = ci_own;
		}

		/* There is no such client */
		if (ci_to == NULL) break;

		// Display the message locally (so you know you have sent it)
		if (ci != NULL && show_local) {
			if (from_index == NETWORK_SERVER_INDEX) {
				char name[NETWORK_NAME_LENGTH];
				StringID str = IsValidCompanyID(ci_to->client_playas) ? STR_COMPANY_NAME : STR_NETWORK_SPECTATORS;
				SetDParam(0, ci_to->client_playas);
				GetString(name, str, lastof(name));
				NetworkTextMessage(action, (ConsoleColour)GetDrawStringCompanyColor(ci_own->client_playas), true, name, "%s", msg);
			} else {
				FOR_ALL_CLIENTS(cs) {
					if (cs->index == from_index) {
						SEND_COMMAND(PACKET_SERVER_CHAT)(cs, action, ci_to->client_index, true, msg);
					}
				}
			}
		}
		}
		break;
	default:
		DEBUG(net, 0, "[server] received unknown chat destination type %d. Doing broadcast instead", desttype);
		/* fall-through to next case */
	case DESTTYPE_BROADCAST:
		FOR_ALL_CLIENTS(cs) {
			SEND_COMMAND(PACKET_SERVER_CHAT)(cs, action, from_index, false, msg);
		}
		ci = NetworkFindClientInfoFromIndex(from_index);
		if (ci != NULL)
			NetworkTextMessage(action, (ConsoleColour)GetDrawStringCompanyColor(ci->client_playas), false, ci->client_name, "%s", msg);
		break;
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_CHAT)
{
	if (cs->status < STATUS_AUTH) {
		/* Illegal call, return error and ignore the packet */
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_AUTHORIZED);
		return;
	}

	NetworkAction action = (NetworkAction)p->Recv_uint8();
	DestType desttype = (DestType)p->Recv_uint8();
	int dest = p->Recv_uint16();
	char msg[NETWORK_CHAT_LENGTH];

	p->Recv_string(msg, NETWORK_CHAT_LENGTH);

	const NetworkClientInfo *ci = DEREF_CLIENT_INFO(cs);
	switch (action) {
		case NETWORK_ACTION_GIVE_MONEY:
			if (!IsValidCompanyID(ci->client_playas)) break;
			/* Fall-through */
		case NETWORK_ACTION_CHAT:
		case NETWORK_ACTION_CHAT_CLIENT:
		case NETWORK_ACTION_CHAT_COMPANY:
			NetworkServerSendChat(action, desttype, dest, msg, cs->index);
			break;
		default:
			IConsolePrintF(CC_ERROR, "WARNING: invalid chat action from client %d (IP: %s).", ci->client_index, GetClientIP(ci));
			SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
			break;
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_SET_PASSWORD)
{
	if (cs->status != STATUS_ACTIVE) {
		/* Illegal call, return error and ignore the packet */
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
		return;
	}

	char password[NETWORK_PASSWORD_LENGTH];
	const NetworkClientInfo *ci;

	p->Recv_string(password, sizeof(password));
	ci = DEREF_CLIENT_INFO(cs);

	if (IsValidCompanyID(ci->client_playas)) {
		ttd_strlcpy(_network_company_info[ci->client_playas].password, password, sizeof(_network_company_info[0].password));
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_SET_NAME)
{
	if (cs->status != STATUS_ACTIVE) {
		/* Illegal call, return error and ignore the packet */
		SEND_COMMAND(PACKET_SERVER_ERROR)(cs, NETWORK_ERROR_NOT_EXPECTED);
		return;
	}

	char client_name[NETWORK_CLIENT_NAME_LENGTH];
	NetworkClientInfo *ci;

	p->Recv_string(client_name, sizeof(client_name));
	ci = DEREF_CLIENT_INFO(cs);

	if (cs->has_quit) return;

	if (ci != NULL) {
		// Display change
		if (NetworkFindName(client_name)) {
			NetworkTextMessage(NETWORK_ACTION_NAME_CHANGE, CC_DEFAULT, false, ci->client_name, "%s", client_name);
			ttd_strlcpy(ci->client_name, client_name, sizeof(ci->client_name));
			NetworkUpdateClientInfo(ci->client_index);
		}
	}
}

DEF_SERVER_RECEIVE_COMMAND(PACKET_CLIENT_RCON)
{
	char pass[NETWORK_PASSWORD_LENGTH];
	char command[NETWORK_RCONCOMMAND_LENGTH];

	if (StrEmpty(_settings_client.network.rcon_password)) return;

	p->Recv_string(pass, sizeof(pass));
	p->Recv_string(command, sizeof(command));

	if (strcmp(pass, _settings_client.network.rcon_password) != 0) {
		DEBUG(net, 0, "[rcon] wrong password from client-id %d", cs->index);
		return;
	}

	DEBUG(net, 0, "[rcon] client-id %d executed: '%s'", cs->index, command);

	_redirect_console_to_client = cs->index;
	IConsoleCmdExec(command);
	_redirect_console_to_client = 0;
	return;
}

// The layout for the receive-functions by the server
typedef void NetworkServerPacket(NetworkTCPSocketHandler *cs, Packet *p);


// This array matches PacketType. At an incoming
//  packet it is matches against this array
//  and that way the right function to handle that
//  packet is found.
static NetworkServerPacket* const _network_server_packet[] = {
	NULL, /*PACKET_SERVER_FULL,*/
	NULL, /*PACKET_SERVER_BANNED,*/
	RECEIVE_COMMAND(PACKET_CLIENT_JOIN),
	NULL, /*PACKET_SERVER_ERROR,*/
	RECEIVE_COMMAND(PACKET_CLIENT_COMPANY_INFO),
	NULL, /*PACKET_SERVER_COMPANY_INFO,*/
	NULL, /*PACKET_SERVER_CLIENT_INFO,*/
	NULL, /*PACKET_SERVER_NEED_PASSWORD,*/
	RECEIVE_COMMAND(PACKET_CLIENT_PASSWORD),
	NULL, /*PACKET_SERVER_WELCOME,*/
	RECEIVE_COMMAND(PACKET_CLIENT_GETMAP),
	NULL, /*PACKET_SERVER_WAIT,*/
	NULL, /*PACKET_SERVER_MAP,*/
	RECEIVE_COMMAND(PACKET_CLIENT_MAP_OK),
	NULL, /*PACKET_SERVER_JOIN,*/
	NULL, /*PACKET_SERVER_FRAME,*/
	NULL, /*PACKET_SERVER_SYNC,*/
	RECEIVE_COMMAND(PACKET_CLIENT_ACK),
	RECEIVE_COMMAND(PACKET_CLIENT_COMMAND),
	NULL, /*PACKET_SERVER_COMMAND,*/
	RECEIVE_COMMAND(PACKET_CLIENT_CHAT),
	NULL, /*PACKET_SERVER_CHAT,*/
	RECEIVE_COMMAND(PACKET_CLIENT_SET_PASSWORD),
	RECEIVE_COMMAND(PACKET_CLIENT_SET_NAME),
	RECEIVE_COMMAND(PACKET_CLIENT_QUIT),
	RECEIVE_COMMAND(PACKET_CLIENT_ERROR),
	NULL, /*PACKET_SERVER_QUIT,*/
	NULL, /*PACKET_SERVER_ERROR_QUIT,*/
	NULL, /*PACKET_SERVER_SHUTDOWN,*/
	NULL, /*PACKET_SERVER_NEWGAME,*/
	NULL, /*PACKET_SERVER_RCON,*/
	RECEIVE_COMMAND(PACKET_CLIENT_RCON),
	NULL, /*PACKET_CLIENT_CHECK_NEWGRFS,*/
	RECEIVE_COMMAND(PACKET_CLIENT_NEWGRFS_CHECKED),
};

// If this fails, check the array above with network_data.h
assert_compile(lengthof(_network_server_packet) == PACKET_END);

// This update the company_info-stuff
void NetworkPopulateCompanyInfo()
{
	char password[NETWORK_PASSWORD_LENGTH];
	const Company *c;
	const Vehicle *v;
	const Station *s;
	NetworkTCPSocketHandler *cs;
	const NetworkClientInfo *ci;
	uint i;
	uint16 months_empty;

	for (CompanyID cid = COMPANY_FIRST; cid < MAX_COMPANIES; cid++) {
		if (!IsValidCompanyID(cid)) memset(&_network_company_info[cid], 0, sizeof(NetworkCompanyInfo));
	}

	FOR_ALL_COMPANIES(c) {
		// Clean the info but not the password
		ttd_strlcpy(password, _network_company_info[c->index].password, sizeof(password));
		months_empty = _network_company_info[c->index].months_empty;
		memset(&_network_company_info[c->index], 0, sizeof(NetworkCompanyInfo));
		_network_company_info[c->index].months_empty = months_empty;
		ttd_strlcpy(_network_company_info[c->index].password, password, sizeof(_network_company_info[c->index].password));

		// Grap the company name
		SetDParam(0, c->index);
		GetString(_network_company_info[c->index].company_name, STR_COMPANY_NAME, lastof(_network_company_info[c->index].company_name));

		// Check the income
		if (_cur_year - 1 == c->inaugurated_year) {
			// The company is here just 1 year, so display [2], else display[1]
			for (i = 0; i < lengthof(c->yearly_expenses[2]); i++) {
				_network_company_info[c->index].income -= c->yearly_expenses[2][i];
			}
		} else {
			for (i = 0; i < lengthof(c->yearly_expenses[1]); i++) {
				_network_company_info[c->index].income -= c->yearly_expenses[1][i];
			}
		}

		// Set some general stuff
		_network_company_info[c->index].inaugurated_year = c->inaugurated_year;
		_network_company_info[c->index].company_value = c->old_economy[0].company_value;
		_network_company_info[c->index].money = c->money;
		_network_company_info[c->index].performance = c->old_economy[0].performance_history;
	}

	// Go through all vehicles and count the type of vehicles
	FOR_ALL_VEHICLES(v) {
		if (!IsValidCompanyID(v->owner) || !v->IsPrimaryVehicle()) continue;
		byte type = 0;
		switch (v->type) {
			case VEH_TRAIN: type = 0; break;
			case VEH_ROAD: type = (v->cargo_type != CT_PASSENGERS) ? 1 : 2; break;
			case VEH_AIRCRAFT: type = 3; break;
			case VEH_SHIP: type = 4; break;
			default: continue;
		}
		_network_company_info[v->owner].num_vehicle[type]++;
	}

	// Go through all stations and count the types of stations
	FOR_ALL_STATIONS(s) {
		if (IsValidCompanyID(s->owner)) {
			NetworkCompanyInfo *npi = &_network_company_info[s->owner];

			if (s->facilities & FACIL_TRAIN)      npi->num_station[0]++;
			if (s->facilities & FACIL_TRUCK_STOP) npi->num_station[1]++;
			if (s->facilities & FACIL_BUS_STOP)   npi->num_station[2]++;
			if (s->facilities & FACIL_AIRPORT)    npi->num_station[3]++;
			if (s->facilities & FACIL_DOCK)       npi->num_station[4]++;
		}
	}

	ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
	// Register local company (if not dedicated)
	if (ci != NULL && IsValidCompanyID(ci->client_playas))
		ttd_strlcpy(_network_company_info[ci->client_playas].clients, ci->client_name, sizeof(_network_company_info[0].clients));

	FOR_ALL_CLIENTS(cs) {
		char client_name[NETWORK_CLIENT_NAME_LENGTH];

		NetworkGetClientName(client_name, sizeof(client_name), cs);

		ci = DEREF_CLIENT_INFO(cs);
		if (ci != NULL && IsValidCompanyID(ci->client_playas)) {
			if (!StrEmpty(_network_company_info[ci->client_playas].clients)) {
				ttd_strlcat(_network_company_info[ci->client_playas].clients, ", ", lengthof(_network_company_info[0].clients));
			}

			ttd_strlcat(_network_company_info[ci->client_playas].clients, client_name, lengthof(_network_company_info[0].clients));
		}
	}
}

// Send a packet to all clients with updated info about this client_index
void NetworkUpdateClientInfo(uint16 client_index)
{
	NetworkTCPSocketHandler *cs;
	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(client_index);

	if (ci == NULL) return;

	FOR_ALL_CLIENTS(cs) {
		SEND_COMMAND(PACKET_SERVER_CLIENT_INFO)(cs, ci);
	}
}

/* Check if we want to restart the map */
static void NetworkCheckRestartMap()
{
	if (_settings_client.network.restart_game_year != 0 && _cur_year >= _settings_client.network.restart_game_year) {
		DEBUG(net, 0, "Auto-restarting map. Year %d reached", _cur_year);

		StartNewGameWithoutGUI(GENERATE_NEW_SEED);
	}
}

/* Check if the server has autoclean_companies activated
    Two things happen:
      1) If a company is not protected, it is closed after 1 year (for example)
      2) If a company is protected, protection is disabled after 3 years (for example)
           (and item 1. happens a year later) */
static void NetworkAutoCleanCompanies()
{
	NetworkTCPSocketHandler *cs;
	const NetworkClientInfo *ci;
	const Company *c;
	bool clients_in_company[MAX_COMPANIES];

	if (!_settings_client.network.autoclean_companies) return;

	memset(clients_in_company, 0, sizeof(clients_in_company));

	/* Detect the active companies */
	FOR_ALL_CLIENTS(cs) {
		ci = DEREF_CLIENT_INFO(cs);
		if (IsValidCompanyID(ci->client_playas)) clients_in_company[ci->client_playas] = true;
	}

	if (!_network_dedicated) {
		ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
		if (IsValidCompanyID(ci->client_playas)) clients_in_company[ci->client_playas] = true;
	}

	/* Go through all the comapnies */
	FOR_ALL_COMPANIES(c) {
		/* Skip the non-active once */
		if (c->is_ai) continue;

		if (!clients_in_company[c->index]) {
			/* The company is empty for one month more */
			_network_company_info[c->index].months_empty++;

			/* Is the company empty for autoclean_unprotected-months, and is there no protection? */
			if (_settings_client.network.autoclean_unprotected != 0 && _network_company_info[c->index].months_empty > _settings_client.network.autoclean_unprotected && StrEmpty(_network_company_info[c->index].password)) {
				/* Shut the company down */
				DoCommandP(0, 2, c->index, NULL, CMD_COMPANY_CTRL);
				IConsolePrintF(CC_DEFAULT, "Auto-cleaned company #%d", c->index + 1);
			}
			/* Is the company empty for autoclean_protected-months, and there is a protection? */
			if (_settings_client.network.autoclean_protected != 0 && _network_company_info[c->index].months_empty > _settings_client.network.autoclean_protected && !StrEmpty(_network_company_info[c->index].password)) {
				/* Unprotect the company */
				_network_company_info[c->index].password[0] = '\0';
				IConsolePrintF(CC_DEFAULT, "Auto-removed protection from company #%d", c->index + 1);
				_network_company_info[c->index].months_empty = 0;
			}
		} else {
			/* It is not empty, reset the date */
			_network_company_info[c->index].months_empty = 0;
		}
	}
}

// This function changes new_name to a name that is unique (by adding #1 ...)
//  and it returns true if that succeeded.
bool NetworkFindName(char new_name[NETWORK_CLIENT_NAME_LENGTH])
{
	NetworkTCPSocketHandler *new_cs;
	bool found_name = false;
	byte number = 0;
	char original_name[NETWORK_CLIENT_NAME_LENGTH];

	// We use NETWORK_CLIENT_NAME_LENGTH in here, because new_name is really a pointer
	ttd_strlcpy(original_name, new_name, NETWORK_CLIENT_NAME_LENGTH);

	while (!found_name) {
		const NetworkClientInfo *ci;

		found_name = true;
		FOR_ALL_CLIENTS(new_cs) {
			ci = DEREF_CLIENT_INFO(new_cs);
			if (strcmp(ci->client_name, new_name) == 0) {
				// Name already in use
				found_name = false;
				break;
			}
		}
		// Check if it is the same as the server-name
		ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);
		if (ci != NULL) {
			if (strcmp(ci->client_name, new_name) == 0) found_name = false; // name already in use
		}

		if (!found_name) {
			// Try a new name (<name> #1, <name> #2, and so on)

			// Stop if we tried for more than 50 times..
			if (number++ > 50) break;
			snprintf(new_name, NETWORK_CLIENT_NAME_LENGTH, "%s #%d", original_name, number);
		}
	}

	return found_name;
}

// Reads a packet from the stream
bool NetworkServer_ReadPackets(NetworkTCPSocketHandler *cs)
{
	Packet *p;
	NetworkRecvStatus res;
	while ((p = cs->Recv_Packet(&res)) != NULL) {
		byte type = p->Recv_uint8();
		if (type < PACKET_END && _network_server_packet[type] != NULL && !cs->has_quit) {
			_network_server_packet[type](cs, p);
		} else {
			DEBUG(net, 0, "[server] received invalid packet type %d", type);
		}
		delete p;
	}

	return true;
}

// Handle the local command-queue
static void NetworkHandleCommandQueue(NetworkTCPSocketHandler* cs)
{
	CommandPacket *cp;

	while ( (cp = cs->command_queue) != NULL) {
		SEND_COMMAND(PACKET_SERVER_COMMAND)(cs, cp);

		cs->command_queue = cp->next;
		free(cp);
	}
}

// This is called every tick if this is a _network_server
void NetworkServer_Tick(bool send_frame)
{
	NetworkTCPSocketHandler *cs;
#ifndef ENABLE_NETWORK_SYNC_EVERY_FRAME
	bool send_sync = false;
#endif

#ifndef ENABLE_NETWORK_SYNC_EVERY_FRAME
	if (_frame_counter >= _last_sync_frame + _settings_client.network.sync_freq) {
		_last_sync_frame = _frame_counter;
		send_sync = true;
	}
#endif

	// Now we are done with the frame, inform the clients that they can
	//  do their frame!
	FOR_ALL_CLIENTS(cs) {
		// Check if the speed of the client is what we can expect from a client
		if (cs->status == STATUS_ACTIVE) {
			// 1 lag-point per day
			int lag = NetworkCalculateLag(cs) / DAY_TICKS;
			if (lag > 0) {
				if (lag > 3) {
					// Client did still not report in after 4 game-day, drop him
					//  (that is, the 3 of above, + 1 before any lag is counted)
					IConsolePrintF(CC_ERROR,"Client #%d is dropped because the client did not respond for more than 4 game-days", cs->index);
					NetworkCloseClient(cs);
					continue;
				}

				// Report once per time we detect the lag
				if (cs->lag_test == 0) {
					IConsolePrintF(CC_WARNING,"[%d] Client #%d is slow, try increasing *net_frame_freq to a higher value!", _frame_counter, cs->index);
					cs->lag_test = 1;
				}
			} else {
				cs->lag_test = 0;
			}
		} else if (cs->status == STATUS_PRE_ACTIVE) {
			int lag = NetworkCalculateLag(cs);
			if (lag > _settings_client.network.max_join_time) {
				IConsolePrintF(CC_ERROR,"Client #%d is dropped because it took longer than %d ticks for him to join", cs->index, _settings_client.network.max_join_time);
				NetworkCloseClient(cs);
			}
		} else if (cs->status == STATUS_INACTIVE) {
			int lag = NetworkCalculateLag(cs);
			if (lag > 4 * DAY_TICKS) {
				IConsolePrintF(CC_ERROR,"Client #%d is dropped because it took longer than %d ticks to start the joining process", cs->index, 4 * DAY_TICKS);
				NetworkCloseClient(cs);
			}
		}

		if (cs->status >= STATUS_PRE_ACTIVE) {
			// Check if we can send command, and if we have anything in the queue
			NetworkHandleCommandQueue(cs);

			// Send an updated _frame_counter_max to the client
			if (send_frame) SEND_COMMAND(PACKET_SERVER_FRAME)(cs);

#ifndef ENABLE_NETWORK_SYNC_EVERY_FRAME
			// Send a sync-check packet
			if (send_sync) SEND_COMMAND(PACKET_SERVER_SYNC)(cs);
#endif
		}
	}

	/* See if we need to advertise */
	NetworkUDPAdvertise();
}

void NetworkServerYearlyLoop()
{
	NetworkCheckRestartMap();
}

void NetworkServerMonthlyLoop()
{
	NetworkAutoCleanCompanies();
}

void NetworkServerChangeOwner(Owner current_owner, Owner new_owner)
{
	/* The server has to handle all administrative issues, for example
	 * updating and notifying all clients of what has happened */
	NetworkTCPSocketHandler *cs;
	NetworkClientInfo *ci = NetworkFindClientInfoFromIndex(NETWORK_SERVER_INDEX);

	/* The server has just changed from owner */
	if (current_owner == ci->client_playas) {
		ci->client_playas = new_owner;
		NetworkUpdateClientInfo(NETWORK_SERVER_INDEX);
	}

	/* Find all clients that were in control of this company, and mark them as new_owner */
	FOR_ALL_CLIENTS(cs) {
		ci = DEREF_CLIENT_INFO(cs);
		if (current_owner == ci->client_playas) {
			ci->client_playas = new_owner;
			NetworkUpdateClientInfo(ci->client_index);
		}
	}
}

const char* GetClientIP(const NetworkClientInfo* ci)
{
	struct in_addr addr;

	addr.s_addr = ci->client_ip;
	return inet_ntoa(addr);
}

void NetworkServerShowStatusToConsole()
{
	static const char* const stat_str[] = {
		"inactive",
		"authorizing",
		"authorized",
		"waiting",
		"loading map",
		"map done",
		"ready",
		"active"
	};

	NetworkTCPSocketHandler *cs;
	FOR_ALL_CLIENTS(cs) {
		int lag = NetworkCalculateLag(cs);
		const NetworkClientInfo *ci = DEREF_CLIENT_INFO(cs);
		const char* status;

		status = (cs->status < (ptrdiff_t)lengthof(stat_str) ? stat_str[cs->status] : "unknown");
		IConsolePrintF(CC_INFO, "Client #%1d  name: '%s'  status: '%s'  frame-lag: %3d  company: %1d  IP: %s  unique-id: '%s'",
			cs->index, ci->client_name, status, lag,
			ci->client_playas + (IsValidCompanyID(ci->client_playas) ? 1 : 0),
			GetClientIP(ci), ci->unique_id);
	}
}

void NetworkServerSendRcon(uint16 client_index, ConsoleColour colour_code, const char *string)
{
	SEND_COMMAND(PACKET_SERVER_RCON)(NetworkFindClientStateFromIndex(client_index), colour_code, string);
}

void NetworkServerSendError(uint16 client_index, NetworkErrorCode error)
{
	SEND_COMMAND(PACKET_SERVER_ERROR)(NetworkFindClientStateFromIndex(client_index), error);
}

bool NetworkCompanyHasClients(CompanyID company)
{
	const NetworkTCPSocketHandler *cs;
	const NetworkClientInfo *ci;
	FOR_ALL_CLIENTS(cs) {
		ci = DEREF_CLIENT_INFO(cs);
		if (ci->client_playas == company) return true;
	}
	return false;
}
#endif /* ENABLE_NETWORK */