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net: better masterserver communication
[d2df-sdl.git] / src / game / g_net.pas
1 (* Copyright (C) Doom 2D: Forever Developers
2 *
3 * This program is free software: you can redistribute it and/or modify
4 * it under the terms of the GNU General Public License as published by
5 * the Free Software Foundation, version 3 of the License ONLY.
6 *
7 * This program is distributed in the hope that it will be useful,
8 * but WITHOUT ANY WARRANTY; without even the implied warranty of
9 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10 * GNU General Public License for more details.
11 *
12 * You should have received a copy of the GNU General Public License
13 * along with this program. If not, see <http://www.gnu.org/licenses/>.
14 *)
15 {$INCLUDE ../shared/a_modes.inc}
16 unit g_net;
17
18 interface
19
20 uses
21 e_log, e_msg, ENet, Classes, md5, MAPDEF{$IFDEF USE_MINIUPNPC}, miniupnpc;{$ELSE};{$ENDIF}
22
23 const
24 NET_PROTOCOL_VER = 182;
25
26 NET_MAXCLIENTS = 24;
27 NET_CHANS = 12;
28
29 NET_CHAN_SERVICE = 0;
30 NET_CHAN_IMPORTANT = 1;
31 NET_CHAN_GAME = 2;
32 NET_CHAN_PLAYER = 3;
33 NET_CHAN_PLAYERPOS = 4;
34 NET_CHAN_MONSTER = 5;
35 NET_CHAN_MONSTERPOS = 6;
36 NET_CHAN_LARGEDATA = 7;
37 NET_CHAN_CHAT = 8;
38 NET_CHAN_DOWNLOAD = 9;
39 NET_CHAN_SHOTS = 10;
40 NET_CHAN_DOWNLOAD_EX = 11;
41
42 NET_NONE = 0;
43 NET_SERVER = 1;
44 NET_CLIENT = 2;
45
46 NET_BUFSIZE = $FFFF;
47 NET_PING_PORT = $DF2D;
48
49 NET_EVERYONE = -1;
50
51 NET_UNRELIABLE = 0;
52 NET_RELIABLE = 1;
53
54 NET_DISC_NONE: enet_uint32 = 0;
55 NET_DISC_PROTOCOL: enet_uint32 = 1;
56 NET_DISC_VERSION: enet_uint32 = 2;
57 NET_DISC_FULL: enet_uint32 = 3;
58 NET_DISC_KICK: enet_uint32 = 4;
59 NET_DISC_DOWN: enet_uint32 = 5;
60 NET_DISC_PASSWORD: enet_uint32 = 6;
61 NET_DISC_TEMPBAN: enet_uint32 = 7;
62 NET_DISC_BAN: enet_uint32 = 8;
63 NET_DISC_MAX: enet_uint32 = 8;
64 NET_DISC_FILE_TIMEOUT: enet_uint32 = 13;
65
66 NET_STATE_NONE = 0;
67 NET_STATE_AUTH = 1;
68 NET_STATE_GAME = 2;
69
70 NET_CONNECT_TIMEOUT = 1000 * 10;
71
72 BANLIST_FILENAME = 'banlist.txt';
73 NETDUMP_FILENAME = 'netdump';
74
75 {$IFDEF FREEBSD}
76 NilThreadId = nil;
77 {$ELSE}
78 NilThreadId = 0;
79 {$ENDIF}
80
81 type
82 TNetMapResourceInfo = record
83 wadName: AnsiString; // wad file name, without a path
84 size: Integer; // wad file size (-1: size and hash are not known)
85 hash: TMD5Digest; // wad hash
86 end;
87
88 TNetMapResourceInfoArray = array of TNetMapResourceInfo;
89
90 TNetFileTransfer = record
91 diskName: string;
92 hash: TMD5Digest;
93 stream: TStream;
94 size: Integer; // file size in bytes
95 chunkSize: Integer;
96 lastSentChunk: Integer;
97 lastAckChunk: Integer;
98 lastAckTime: Int64; // msecs; if not "in progress", we're waiting for the first ack
99 inProgress: Boolean;
100 diskBuffer: PChar; // of `chunkSize` bytes
101 resumed: Boolean;
102 end;
103
104 TNetClient = record
105 ID: Byte;
106 Used: Boolean;
107 State: Byte;
108 Peer: pENetPeer;
109 Player: Word;
110 RequestedFullUpdate: Boolean;
111 RCONAuth: Boolean;
112 Voted: Boolean;
113 Transfer: TNetFileTransfer; // only one transfer may be active
114 NetOut: array [0..1] of TMsg;
115 end;
116 TBanRecord = record
117 IP: LongWord;
118 Perm: Boolean;
119 end;
120 pTNetClient = ^TNetClient;
121
122 AByte = array of Byte;
123
124 var
125 NetInitDone: Boolean = False;
126 NetMode: Byte = NET_NONE;
127 NetDump: Boolean = False;
128
129 NetServerName: string = 'Unnamed Server';
130 NetPassword: string = '';
131 NetPort: Word = 25666;
132
133 NetAllowRCON: Boolean = False;
134 NetRCONPassword: string = '';
135
136 NetTimeToUpdate: Cardinal = 0;
137 NetTimeToReliable: Cardinal = 0;
138 NetTimeToMaster: Cardinal = 0;
139
140 NetHost: pENetHost = nil;
141 NetPeer: pENetPeer = nil;
142 NetEvent: ENetEvent;
143 NetAddr: ENetAddress;
144
145 NetPongAddr: ENetAddress;
146 NetPongSock: ENetSocket = ENET_SOCKET_NULL;
147
148 NetUseMaster: Boolean = True;
149 NetSlistAddr: ENetAddress;
150 NetSlistIP: string = 'mpms.doom2d.org';
151 NetSlistPort: Word = 25665;
152
153 NetClientIP: string = '127.0.0.1';
154 NetClientPort: Word = 25666;
155
156 NetIn, NetOut: TMsg;
157 NetBuf: array [0..1] of TMsg;
158
159 NetClients: array of TNetClient;
160 NetClientCount: Byte = 0;
161 NetMaxClients: Byte = 255;
162 NetBannedHosts: array of TBanRecord;
163
164 NetState: Integer = NET_STATE_NONE;
165
166 NetMyID: Integer = -1;
167 NetPlrUID1: Integer = -1;
168 NetPlrUID2: Integer = -1;
169
170 NetInterpLevel: Integer = 1;
171 NetUpdateRate: Cardinal = 0; // as soon as possible
172 NetRelupdRate: Cardinal = 18; // around two times a second
173 NetMasterRate: Cardinal = 60000;
174
175 NetForcePlayerUpdate: Boolean = False;
176 NetPredictSelf: Boolean = True;
177 NetForwardPorts: Boolean = False;
178
179 NetGotEverything: Boolean = False;
180 NetGotKeys: Boolean = False;
181
182 {$IFDEF USE_MINIUPNPC}
183 NetPortForwarded: Word = 0;
184 NetPongForwarded: Boolean = False;
185 NetIGDControl: AnsiString;
186 NetIGDService: TURLStr;
187 {$ENDIF}
188
189 NetPortThread: TThreadID = NilThreadId;
190
191 NetDumpFile: TStream;
192
193 g_Res_received_map_start: Integer = 0; // set if we received "map change" event
194
195
196 function g_Net_Init(): Boolean;
197 procedure g_Net_Cleanup();
198 procedure g_Net_Free();
199 procedure g_Net_Flush();
200
201 function g_Net_Host(IPAddr: LongWord; Port: enet_uint16; MaxClients: Cardinal = 16): Boolean;
202 procedure g_Net_Host_Die();
203 procedure g_Net_Host_Send(ID: Integer; Reliable: Boolean; Chan: Byte = NET_CHAN_GAME);
204 function g_Net_Host_Update(): enet_size_t;
205
206 function g_Net_Connect(IP: string; Port: enet_uint16): Boolean;
207 procedure g_Net_Disconnect(Forced: Boolean = False);
208 procedure g_Net_Client_Send(Reliable: Boolean; Chan: Byte = NET_CHAN_GAME);
209 function g_Net_Client_Update(): enet_size_t;
210 function g_Net_Client_UpdateWhileLoading(): enet_size_t;
211
212 function g_Net_Client_ByName(Name: string): pTNetClient;
213 function g_Net_Client_ByPlayer(PID: Word): pTNetClient;
214 function g_Net_ClientName_ByID(ID: Integer): string;
215
216 procedure g_Net_SendData(Data: AByte; peer: pENetPeer; Reliable: Boolean; Chan: Byte = NET_CHAN_DOWNLOAD);
217 //function g_Net_Wait_Event(msgId: Word): TMemoryStream;
218 //function g_Net_Wait_FileInfo (var tf: TNetFileTransfer; asMap: Boolean; out resList: TStringList): Integer;
219
220 function IpToStr(IP: LongWord): string;
221 function StrToIp(IPstr: string; var IP: LongWord): Boolean;
222
223 function g_Net_IsHostBanned(IP: LongWord; Perm: Boolean = False): Boolean;
224 procedure g_Net_BanHost(IP: LongWord; Perm: Boolean = True); overload;
225 procedure g_Net_BanHost(IP: string; Perm: Boolean = True); overload;
226 function g_Net_UnbanHost(IP: string): Boolean; overload;
227 function g_Net_UnbanHost(IP: LongWord): Boolean; overload;
228 procedure g_Net_UnbanNonPermHosts();
229 procedure g_Net_SaveBanList();
230
231 procedure g_Net_DumpStart();
232 procedure g_Net_DumpSendBuffer();
233 procedure g_Net_DumpRecvBuffer(Buf: penet_uint8; Len: LongWord);
234 procedure g_Net_DumpEnd();
235
236 function g_Net_ForwardPorts(ForwardPongPort: Boolean = True): Boolean;
237 procedure g_Net_UnforwardPorts();
238
239 function g_Net_UserRequestExit: Boolean;
240
241 function g_Net_Wait_MapInfo (var tf: TNetFileTransfer; var resList: TNetMapResourceInfoArray): Integer;
242 function g_Net_RequestResFileInfo (resIndex: LongInt; out tf: TNetFileTransfer): Integer;
243 function g_Net_AbortResTransfer (var tf: TNetFileTransfer): Boolean;
244 function g_Net_ReceiveResourceFile (resIndex: LongInt; var tf: TNetFileTransfer; strm: TStream): Integer;
245
246
247 implementation
248
249 uses
250 SysUtils,
251 e_input, g_nethandler, g_netmsg, g_netmaster, g_player, g_window, g_console,
252 g_main, g_game, g_language, g_weapons, utils, ctypes,
253 g_map;
254
255 const
256 FILE_CHUNK_SIZE = 8192;
257
258 var
259 g_Net_DownloadTimeout: Single;
260 trans_omsg: TMsg;
261
262
263 //**************************************************************************
264 //
265 // SERVICE FUNCTIONS
266 //
267 //**************************************************************************
268
269 procedure clearNetClientTransfers (var nc: TNetClient);
270 begin
271 nc.Transfer.stream.Free;
272 nc.Transfer.diskName := ''; // just in case
273 if (nc.Transfer.diskBuffer <> nil) then FreeMem(nc.Transfer.diskBuffer);
274 nc.Transfer.stream := nil;
275 nc.Transfer.diskBuffer := nil;
276 end;
277
278
279 procedure clearNetClient (var nc: TNetClient);
280 begin
281 clearNetClientTransfers(nc);
282 end;
283
284
285 procedure clearNetClients (clearArray: Boolean);
286 var
287 f: Integer;
288 begin
289 for f := Low(NetClients) to High(NetClients) do clearNetClient(NetClients[f]);
290 if (clearArray) then SetLength(NetClients, 0);
291 end;
292
293
294 function g_Net_UserRequestExit (): Boolean;
295 begin
296 Result := {e_KeyPressed(IK_SPACE) or}
297 e_KeyPressed(IK_ESCAPE) or
298 e_KeyPressed(VK_ESCAPE) or
299 e_KeyPressed(JOY0_JUMP) or
300 e_KeyPressed(JOY1_JUMP) or
301 e_KeyPressed(JOY2_JUMP) or
302 e_KeyPressed(JOY3_JUMP)
303 end;
304
305
306 //**************************************************************************
307 //
308 // file transfer declaraions and host packet processor
309 //
310 //**************************************************************************
311
312 const
313 // server packet type
314 NTF_SERVER_DONE = 10; // done with this file
315 NTF_SERVER_FILE_INFO = 11; // sent after client request
316 NTF_SERVER_CHUNK = 12; // next chunk; chunk number follows
317 NTF_SERVER_ABORT = 13; // server abort
318 NTF_SERVER_MAP_INFO = 14;
319
320 // client packet type
321 NTF_CLIENT_MAP_REQUEST = 100; // map file request; also, returns list of additional wads to download
322 NTF_CLIENT_FILE_REQUEST = 101; // resource file request (by index)
323 NTF_CLIENT_ABORT = 102; // do not send requested file, or abort current transfer
324 NTF_CLIENT_START = 103; // start transfer; client may resume download by sending non-zero starting chunk
325 NTF_CLIENT_ACK = 104; // chunk ack; chunk number follows
326
327
328 // disconnect client due to some file transfer error
329 procedure killClientByFT (var nc: TNetClient);
330 begin
331 e_LogWritefln('disconnected client #%d due to file transfer error', [nc.ID], TMsgType.Warning);
332 enet_peer_disconnect(nc.Peer, NET_DISC_FILE_TIMEOUT);
333 clearNetClientTransfers(nc);
334 end;
335
336
337 // send file transfer message from server to client
338 function ftransSendServerMsg (var nc: TNetClient; var m: TMsg): Boolean;
339 var
340 pkt: PENetPacket;
341 begin
342 result := false;
343 if (m.CurSize < 1) then exit;
344 pkt := enet_packet_create(m.Data, m.CurSize, ENET_PACKET_FLAG_RELIABLE);
345 if not Assigned(pkt) then begin killClientByFT(nc); exit; end;
346 if (enet_peer_send(nc.Peer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then begin killClientByFT(nc); exit; end;
347 result := true;
348 end;
349
350
351 // send file transfer message from client to server
352 function ftransSendClientMsg (var m: TMsg): Boolean;
353 var
354 pkt: PENetPacket;
355 begin
356 result := false;
357 if (m.CurSize < 1) then exit;
358 pkt := enet_packet_create(m.Data, m.CurSize, ENET_PACKET_FLAG_RELIABLE);
359 if not Assigned(pkt) then exit;
360 if (enet_peer_send(NetPeer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then exit;
361 result := true;
362 end;
363
364
365 // file chunk sender
366 procedure ProcessChunkSend (var nc: TNetClient);
367 var
368 tf: ^TNetFileTransfer;
369 ct: Int64;
370 chunks: Integer;
371 rd: Integer;
372 begin
373 tf := @nc.Transfer;
374 if (tf.stream = nil) then exit;
375 ct := GetTimerMS();
376 // arbitrary timeout number
377 if (ct-tf.lastAckTime >= 5000) then
378 begin
379 killClientByFT(nc);
380 exit;
381 end;
382 // check if we need to send something
383 if (not tf.inProgress) then exit; // waiting for the initial ack
384 // ok, we're sending chunks
385 if (tf.lastAckChunk <> tf.lastSentChunk) then exit;
386 Inc(tf.lastSentChunk);
387 // do it one chunk at a time; client ack will advance our chunk counter
388 chunks := (tf.size+tf.chunkSize-1) div tf.chunkSize;
389
390 if (tf.lastSentChunk > chunks) then
391 begin
392 killClientByFT(nc);
393 exit;
394 end;
395
396 trans_omsg.Clear();
397 if (tf.lastSentChunk = chunks) then
398 begin
399 // we're done with this file
400 e_LogWritefln('download: client #%d, DONE sending chunks #%d/#%d', [nc.ID, tf.lastSentChunk, chunks]);
401 trans_omsg.Write(Byte(NTF_SERVER_DONE));
402 clearNetClientTransfers(nc);
403 end
404 else
405 begin
406 // packet type
407 trans_omsg.Write(Byte(NTF_SERVER_CHUNK));
408 trans_omsg.Write(LongInt(tf.lastSentChunk));
409 // read chunk
410 rd := tf.size-(tf.lastSentChunk*tf.chunkSize);
411 if (rd > tf.chunkSize) then rd := tf.chunkSize;
412 trans_omsg.Write(LongInt(rd));
413 //e_LogWritefln('download: client #%d, sending chunk #%d/#%d (%d bytes)', [nc.ID, tf.lastSentChunk, chunks, rd]);
414 //FIXME: check for errors here
415 try
416 tf.stream.Seek(tf.lastSentChunk*tf.chunkSize, soFromBeginning);
417 tf.stream.ReadBuffer(tf.diskBuffer^, rd);
418 trans_omsg.WriteData(tf.diskBuffer, rd);
419 except // sorry
420 killClientByFT(nc);
421 exit;
422 end;
423 end;
424 // send packet
425 ftransSendServerMsg(nc, trans_omsg);
426 end;
427
428
429 // server file transfer packet processor
430 // received packet is in `NetEvent`
431 procedure ProcessDownloadExPacket ();
432 var
433 f: Integer;
434 nc: ^TNetClient;
435 nid: Integer = -1;
436 msg: TMsg;
437 cmd: Byte;
438 tf: ^TNetFileTransfer;
439 fname: string;
440 chunk: Integer;
441 ridx: Integer;
442 dfn: AnsiString;
443 md5: TMD5Digest;
444 //st: TStream;
445 size: LongInt;
446 fi: TDiskFileInfo;
447 begin
448 // find client index by peer
449 for f := Low(NetClients) to High(NetClients) do
450 begin
451 if (not NetClients[f].Used) then continue;
452 if (NetClients[f].Peer = NetEvent.peer) then
453 begin
454 nid := f;
455 break;
456 end;
457 end;
458 //e_LogWritefln('RECEIVE: dlpacket; client=%d (datalen=%u)', [nid, NetEvent.packet^.dataLength]);
459
460 if (nid < 0) then exit; // wtf?!
461 nc := @NetClients[nid];
462
463 if (NetEvent.packet^.dataLength = 0) then
464 begin
465 killClientByFT(nc^);
466 exit;
467 end;
468
469 tf := @NetClients[nid].Transfer;
470 tf.lastAckTime := GetTimerMS();
471
472 cmd := Byte(NetEvent.packet^.data^);
473 //e_LogWritefln('RECEIVE: nid=%d; cmd=%u', [nid, cmd]);
474 case cmd of
475 NTF_CLIENT_FILE_REQUEST: // file request
476 begin
477 if (tf.stream <> nil) then
478 begin
479 killClientByFT(nc^);
480 exit;
481 end;
482 if (NetEvent.packet^.dataLength < 2) then
483 begin
484 killClientByFT(nc^);
485 exit;
486 end;
487 // new transfer request; build packet
488 if not msg.Init(NetEvent.packet^.data+1, NetEvent.packet^.dataLength-1, True) then
489 begin
490 killClientByFT(nc^);
491 exit;
492 end;
493 // get resource index
494 ridx := msg.ReadLongInt();
495 if (ridx < -1) or (ridx >= length(gExternalResources)) then
496 begin
497 e_LogWritefln('Invalid resource index %d', [ridx], TMsgType.Warning);
498 killClientByFT(nc^);
499 exit;
500 end;
501 if (ridx < 0) then fname := MapsDir+gGameSettings.WAD else fname := {GameDir+'/wads/'+}gExternalResources[ridx].diskName;
502 if (length(fname) = 0) then
503 begin
504 e_WriteLog('Invalid filename: '+fname, TMsgType.Warning);
505 killClientByFT(nc^);
506 exit;
507 end;
508 tf.diskName := findDiskWad(fname);
509 //if (length(tf.diskName) = 0) then tf.diskName := findDiskWad(GameDir+'/wads/'+fname);
510 if (length(tf.diskName) = 0) then
511 begin
512 e_LogWritefln('NETWORK: file "%s" not found!', [fname], TMsgType.Fatal);
513 killClientByFT(nc^);
514 exit;
515 end;
516 // calculate hash
517 //tf.hash := MD5File(tf.diskName);
518 if (ridx < 0) then tf.hash := gWADHash else tf.hash := gExternalResources[ridx].hash;
519 // create file stream
520 tf.diskName := findDiskWad(fname);
521 try
522 tf.stream := openDiskFileRO(tf.diskName);
523 except
524 tf.stream := nil;
525 end;
526 if (tf.stream = nil) then
527 begin
528 e_WriteLog(Format('NETWORK: file "%s" not found!', [fname]), TMsgType.Fatal);
529 killClientByFT(nc^);
530 exit;
531 end;
532 e_LogWritefln('client #%d requested resource #%d (file is `%s` : `%s`)', [nc.ID, ridx, fname, tf.diskName]);
533 tf.size := tf.stream.size;
534 tf.chunkSize := FILE_CHUNK_SIZE; // arbitrary
535 tf.lastSentChunk := -1;
536 tf.lastAckChunk := -1;
537 tf.lastAckTime := GetTimerMS();
538 tf.inProgress := False; // waiting for the first ACK or for the cancel
539 GetMem(tf.diskBuffer, tf.chunkSize);
540 // sent file info message
541 trans_omsg.Clear();
542 trans_omsg.Write(Byte(NTF_SERVER_FILE_INFO));
543 trans_omsg.Write(tf.hash);
544 trans_omsg.Write(tf.size);
545 trans_omsg.Write(tf.chunkSize);
546 trans_omsg.Write(ExtractFileName(fname));
547 if not ftransSendServerMsg(nc^, trans_omsg) then exit;
548 end;
549 NTF_CLIENT_ABORT: // do not send requested file, or abort current transfer
550 begin
551 e_LogWritefln('client #%d aborted file transfer', [nc.ID]);
552 clearNetClientTransfers(nc^);
553 end;
554 NTF_CLIENT_START: // start transfer; client may resume download by sending non-zero starting chunk
555 begin
556 if not Assigned(tf.stream) then
557 begin
558 killClientByFT(nc^);
559 exit;
560 end;
561 if (tf.lastSentChunk <> -1) or (tf.lastAckChunk <> -1) or (tf.inProgress) then
562 begin
563 // double ack, get lost
564 killClientByFT(nc^);
565 exit;
566 end;
567 if (NetEvent.packet^.dataLength < 2) then
568 begin
569 killClientByFT(nc^);
570 exit;
571 end;
572 // build packet
573 if not msg.Init(NetEvent.packet^.data+1, NetEvent.packet^.dataLength-1, True) then
574 begin
575 killClientByFT(nc^);
576 exit;
577 end;
578 chunk := msg.ReadLongInt();
579 if (chunk < 0) or (chunk > (tf.size+tf.chunkSize-1) div tf.chunkSize) then
580 begin
581 killClientByFT(nc^);
582 exit;
583 end;
584 e_LogWritefln('client #%d started file transfer from chunk %d', [nc.ID, chunk]);
585 // start sending chunks
586 tf.inProgress := True;
587 tf.lastSentChunk := chunk-1;
588 tf.lastAckChunk := chunk-1;
589 ProcessChunkSend(nc^);
590 end;
591 NTF_CLIENT_ACK: // chunk ack; chunk number follows
592 begin
593 if not Assigned(tf.stream) then
594 begin
595 killClientByFT(nc^);
596 exit;
597 end;
598 if (tf.lastSentChunk < 0) or (not tf.inProgress) then
599 begin
600 // double ack, get lost
601 killClientByFT(nc^);
602 exit;
603 end;
604 if (NetEvent.packet^.dataLength < 2) then
605 begin
606 killClientByFT(nc^);
607 exit;
608 end;
609 // build packet
610 if not msg.Init(NetEvent.packet^.data+1, NetEvent.packet^.dataLength-1, True) then
611 begin
612 killClientByFT(nc^);
613 exit;
614 end;
615 chunk := msg.ReadLongInt();
616 if (chunk < 0) or (chunk > (tf.size+tf.chunkSize-1) div tf.chunkSize) then
617 begin
618 killClientByFT(nc^);
619 exit;
620 end;
621 // do it this way, so client may seek, or request retransfers for some reason
622 tf.lastAckChunk := chunk;
623 tf.lastSentChunk := chunk;
624 //e_LogWritefln('client #%d acked file transfer chunk %d', [nc.ID, chunk]);
625 ProcessChunkSend(nc^);
626 end;
627 NTF_CLIENT_MAP_REQUEST:
628 begin
629 e_LogWritefln('client #%d requested map info', [nc.ID]);
630 trans_omsg.Clear();
631 dfn := findDiskWad(MapsDir+gGameSettings.WAD);
632 if (dfn = '') then dfn := '!wad_not_found!.wad'; //FIXME
633 //md5 := MD5File(dfn);
634 md5 := gWADHash;
635 if (not GetDiskFileInfo(dfn, fi)) then
636 begin
637 e_LogWritefln('client #%d requested map info, but i cannot get file info', [nc.ID]);
638 killClientByFT(nc^);
639 exit;
640 end;
641 size := fi.size;
642 {
643 st := openDiskFileRO(dfn);
644 if not assigned(st) then exit; //wtf?!
645 size := st.size;
646 st.Free;
647 }
648 // packet type
649 trans_omsg.Write(Byte(NTF_SERVER_MAP_INFO));
650 // map wad name
651 trans_omsg.Write(gGameSettings.WAD);
652 // map wad md5
653 trans_omsg.Write(md5);
654 // map wad size
655 trans_omsg.Write(size);
656 // number of external resources for map
657 trans_omsg.Write(LongInt(length(gExternalResources)));
658 // external resource names
659 for f := 0 to High(gExternalResources) do
660 begin
661 // old style packet
662 //trans_omsg.Write(ExtractFileName(gExternalResources[f])); // GameDir+'/wads/'+ResList.Strings[i]
663 // new style packet
664 trans_omsg.Write('!');
665 trans_omsg.Write(LongInt(gExternalResources[f].size));
666 trans_omsg.Write(gExternalResources[f].hash);
667 trans_omsg.Write(ExtractFileName(gExternalResources[f].diskName));
668 end;
669 // send packet
670 if not ftransSendServerMsg(nc^, trans_omsg) then exit;
671 end;
672 else
673 begin
674 killClientByFT(nc^);
675 exit;
676 end;
677 end;
678 end;
679
680
681 //**************************************************************************
682 //
683 // file transfer crap (both client and server)
684 //
685 //**************************************************************************
686
687 function getNewTimeoutEnd (): Int64;
688 begin
689 result := GetTimerMS();
690 if (g_Net_DownloadTimeout <= 0) then
691 begin
692 result := result+1000*60*3; // 3 minutes
693 end
694 else
695 begin
696 result := result+trunc(g_Net_DownloadTimeout*1000);
697 end;
698 end;
699
700
701 // send map request to server, and wait for "map info" server reply
702 //
703 // returns `false` on error or user abort
704 // fills:
705 // diskName: map wad file name (without a path)
706 // hash: map wad hash
707 // size: map wad size
708 // chunkSize: set too
709 // resList: list of resource wads
710 // returns:
711 // <0 on error
712 // 0 on success
713 // 1 on user abort
714 // 2 on server abort
715 // for maps, first `tf.diskName` name will be map wad name, and `tf.hash`/`tf.size` will contain map info
716 function g_Net_Wait_MapInfo (var tf: TNetFileTransfer; var resList: TNetMapResourceInfoArray): Integer;
717 var
718 ev: ENetEvent;
719 rMsgId: Byte;
720 Ptr: Pointer;
721 msg: TMsg;
722 freePacket: Boolean = false;
723 ct, ett: Int64;
724 status: cint;
725 s: AnsiString;
726 rc, f: LongInt;
727 ri: ^TNetMapResourceInfo;
728 begin
729 SetLength(resList, 0);
730
731 // send request
732 trans_omsg.Clear();
733 trans_omsg.Write(Byte(NTF_CLIENT_MAP_REQUEST));
734 if not ftransSendClientMsg(trans_omsg) then begin result := -1; exit; end;
735
736 FillChar(ev, SizeOf(ev), 0);
737 Result := -1;
738 try
739 ett := getNewTimeoutEnd();
740 repeat
741 status := enet_host_service(NetHost, @ev, 300);
742 if (status < 0) then
743 begin
744 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' network error', True);
745 Result := -1;
746 exit;
747 end;
748 if (status = 0) then
749 begin
750 // check for timeout
751 ct := GetTimerMS();
752 if (ct >= ett) then
753 begin
754 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' timeout reached', True);
755 Result := -1;
756 exit;
757 end;
758 end
759 else
760 begin
761 // some event
762 case ev.kind of
763 ENET_EVENT_TYPE_RECEIVE:
764 begin
765 freePacket := true;
766 if (ev.channelID <> NET_CHAN_DOWNLOAD_EX) then
767 begin
768 //e_LogWritefln('g_Net_Wait_MapInfo: skip message from non-transfer channel', []);
769 freePacket := false;
770 g_Net_Client_HandlePacket(ev.packet, g_Net_ClientLightMsgHandler);
771 if (g_Res_received_map_start < 0) then begin result := -666; exit; end;
772 end
773 else
774 begin
775 ett := getNewTimeoutEnd();
776 if (ev.packet.dataLength < 1) then
777 begin
778 e_LogWritefln('g_Net_Wait_MapInfo: invalid server packet (no data)', []);
779 Result := -1;
780 exit;
781 end;
782 Ptr := ev.packet^.data;
783 rMsgId := Byte(Ptr^);
784 e_LogWritefln('g_Net_Wait_MapInfo: got message %u from server (dataLength=%u)', [rMsgId, ev.packet^.dataLength]);
785 if (rMsgId = NTF_SERVER_FILE_INFO) then
786 begin
787 e_LogWritefln('g_Net_Wait_MapInfo: waiting for map info reply, but got file info reply', []);
788 Result := -1;
789 exit;
790 end
791 else if (rMsgId = NTF_SERVER_ABORT) then
792 begin
793 e_LogWritefln('g_Net_Wait_MapInfo: server aborted transfer', []);
794 Result := 2;
795 exit;
796 end
797 else if (rMsgId = NTF_SERVER_MAP_INFO) then
798 begin
799 e_LogWritefln('g_Net_Wait_MapInfo: creating map info packet...', []);
800 if not msg.Init(ev.packet^.data+1, ev.packet^.dataLength-1, True) then exit;
801 e_LogWritefln('g_Net_Wait_MapInfo: parsing map info packet (rd=%d; max=%d)...', [msg.ReadCount, msg.MaxSize]);
802 SetLength(resList, 0); // just in case
803 // map wad name
804 tf.diskName := msg.ReadString();
805 e_LogWritefln('g_Net_Wait_MapInfo: map wad is `%s`', [tf.diskName]);
806 // map wad md5
807 tf.hash := msg.ReadMD5();
808 // map wad size
809 tf.size := msg.ReadLongInt();
810 e_LogWritefln('g_Net_Wait_MapInfo: map wad size is %d', [tf.size]);
811 // number of external resources for map
812 rc := msg.ReadLongInt();
813 if (rc < 0) or (rc > 1024) then
814 begin
815 e_LogWritefln('g_Net_Wait_Event: invalid number of map external resources (%d)', [rc]);
816 Result := -1;
817 exit;
818 end;
819 e_LogWritefln('g_Net_Wait_MapInfo: map external resource count is %d', [rc]);
820 SetLength(resList, rc);
821 // external resource names
822 for f := 0 to rc-1 do
823 begin
824 ri := @resList[f];
825 s := msg.ReadString();
826 if (length(s) = 0) then begin result := -1; exit; end;
827 if (s = '!') then
828 begin
829 // extended packet
830 ri.size := msg.ReadLongInt();
831 ri.hash := msg.ReadMD5();
832 ri.wadName := ExtractFileName(msg.ReadString());
833 if (length(ri.wadName) = 0) or (ri.size < 0) then begin result := -1; exit; end;
834 end
835 else
836 begin
837 // old-style packet, only name
838 ri.wadName := ExtractFileName(s);
839 if (length(ri.wadName) = 0) then begin result := -1; exit; end;
840 ri.size := -1; // unknown
841 end;
842 end;
843 e_LogWritefln('g_Net_Wait_MapInfo: got map info', []);
844 Result := 0; // success
845 exit;
846 end
847 else
848 begin
849 e_LogWritefln('g_Net_Wait_Event: invalid server packet type', []);
850 Result := -1;
851 exit;
852 end;
853 end;
854 end;
855 ENET_EVENT_TYPE_DISCONNECT:
856 begin
857 if (ev.data <= NET_DISC_MAX) then
858 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' ' + _lc[TStrings_Locale(Cardinal(I_NET_DISC_NONE) + ev.data)], True);
859 Result := -1;
860 exit;
861 end;
862 else
863 begin
864 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' unknown ENet event ' + IntToStr(Ord(ev.kind)), True);
865 result := -1;
866 exit;
867 end;
868 end;
869 if (freePacket) then begin freePacket := false; enet_packet_destroy(ev.packet); end;
870 end;
871 ProcessLoading();
872 if g_Net_UserRequestExit() then
873 begin
874 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' user abort', True);
875 Result := 1;
876 exit;
877 end;
878 until false;
879 finally
880 if (freePacket) then enet_packet_destroy(ev.packet);
881 end;
882 end;
883
884
885 // send file request to server, and wait for server reply
886 //
887 // returns `false` on error or user abort
888 // fills:
889 // diskName (actually, base name)
890 // hash
891 // size
892 // chunkSize
893 // returns:
894 // <0 on error
895 // 0 on success
896 // 1 on user abort
897 // 2 on server abort
898 // for maps, first `tf.diskName` name will be map wad name, and `tf.hash`/`tf.size` will contain map info
899 function g_Net_RequestResFileInfo (resIndex: LongInt; out tf: TNetFileTransfer): Integer;
900 var
901 ev: ENetEvent;
902 rMsgId: Byte;
903 Ptr: Pointer;
904 msg: TMsg;
905 freePacket: Boolean = false;
906 ct, ett: Int64;
907 status: cint;
908 begin
909 // send request
910 trans_omsg.Clear();
911 trans_omsg.Write(Byte(NTF_CLIENT_FILE_REQUEST));
912 trans_omsg.Write(resIndex);
913 if not ftransSendClientMsg(trans_omsg) then begin result := -1; exit; end;
914
915 FillChar(ev, SizeOf(ev), 0);
916 Result := -1;
917 try
918 ett := getNewTimeoutEnd();
919 repeat
920 status := enet_host_service(NetHost, @ev, 300);
921 if (status < 0) then
922 begin
923 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' network error', True);
924 Result := -1;
925 exit;
926 end;
927 if (status = 0) then
928 begin
929 // check for timeout
930 ct := GetTimerMS();
931 if (ct >= ett) then
932 begin
933 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' timeout reached', True);
934 Result := -1;
935 exit;
936 end;
937 end
938 else
939 begin
940 // some event
941 case ev.kind of
942 ENET_EVENT_TYPE_RECEIVE:
943 begin
944 freePacket := true;
945 if (ev.channelID <> NET_CHAN_DOWNLOAD_EX) then
946 begin
947 //e_LogWriteln('g_Net_Wait_Event: skip message from non-transfer channel');
948 freePacket := false;
949 g_Net_Client_HandlePacket(ev.packet, g_Net_ClientLightMsgHandler);
950 if (g_Res_received_map_start < 0) then begin result := -666; exit; end;
951 end
952 else
953 begin
954 ett := getNewTimeoutEnd();
955 if (ev.packet.dataLength < 1) then
956 begin
957 e_LogWriteln('g_Net_Wait_Event: invalid server packet (no data)');
958 Result := -1;
959 exit;
960 end;
961 Ptr := ev.packet^.data;
962 rMsgId := Byte(Ptr^);
963 e_LogWritefln('received transfer packet with id %d (%u bytes)', [rMsgId, ev.packet^.dataLength]);
964 if (rMsgId = NTF_SERVER_FILE_INFO) then
965 begin
966 if not msg.Init(ev.packet^.data+1, ev.packet^.dataLength-1, True) then exit;
967 tf.hash := msg.ReadMD5();
968 tf.size := msg.ReadLongInt();
969 tf.chunkSize := msg.ReadLongInt();
970 tf.diskName := ExtractFileName(msg.readString());
971 if (tf.size < 0) or (tf.chunkSize <> FILE_CHUNK_SIZE) or (length(tf.diskName) = 0) then
972 begin
973 e_LogWritefln('g_Net_RequestResFileInfo: invalid file info packet', []);
974 Result := -1;
975 exit;
976 end;
977 e_LogWritefln('got file info for resource #%d: size=%d; name=%s', [resIndex, tf.size, tf.diskName]);
978 Result := 0; // success
979 exit;
980 end
981 else if (rMsgId = NTF_SERVER_ABORT) then
982 begin
983 e_LogWriteln('g_Net_RequestResFileInfo: server aborted transfer');
984 Result := 2;
985 exit;
986 end
987 else if (rMsgId = NTF_SERVER_MAP_INFO) then
988 begin
989 e_LogWriteln('g_Net_RequestResFileInfo: waiting for map info reply, but got file info reply');
990 Result := -1;
991 exit;
992 end
993 else
994 begin
995 e_LogWriteln('g_Net_RequestResFileInfo: invalid server packet type');
996 Result := -1;
997 exit;
998 end;
999 end;
1000 end;
1001 ENET_EVENT_TYPE_DISCONNECT:
1002 begin
1003 if (ev.data <= NET_DISC_MAX) then
1004 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' ' + _lc[TStrings_Locale(Cardinal(I_NET_DISC_NONE) + ev.data)], True);
1005 Result := -1;
1006 exit;
1007 end;
1008 else
1009 begin
1010 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' unknown ENet event ' + IntToStr(Ord(ev.kind)), True);
1011 result := -1;
1012 exit;
1013 end;
1014 end;
1015 if (freePacket) then begin freePacket := false; enet_packet_destroy(ev.packet); end;
1016 end;
1017 ProcessLoading();
1018 if g_Net_UserRequestExit() then
1019 begin
1020 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' user abort', True);
1021 Result := 1;
1022 exit;
1023 end;
1024 until false;
1025 finally
1026 if (freePacket) then enet_packet_destroy(ev.packet);
1027 end;
1028 end;
1029
1030
1031 // call this to cancel file transfer requested by `g_Net_RequestResFileInfo()`
1032 function g_Net_AbortResTransfer (var tf: TNetFileTransfer): Boolean;
1033 begin
1034 result := false;
1035 e_LogWritefln('aborting file transfer...', []);
1036 // send request
1037 trans_omsg.Clear();
1038 trans_omsg.Write(Byte(NTF_CLIENT_ABORT));
1039 result := ftransSendClientMsg(trans_omsg);
1040 if result then enet_host_flush(NetHost);
1041 end;
1042
1043
1044 // call this to start file transfer requested by `g_Net_RequestResFileInfo()`
1045 //
1046 // returns `false` on error or user abort
1047 // fills:
1048 // hash
1049 // size
1050 // chunkSize
1051 // returns:
1052 // <0 on error
1053 // 0 on success
1054 // 1 on user abort
1055 // 2 on server abort
1056 // for maps, first `tf.diskName` name will be map wad name, and `tf.hash`/`tf.size` will contain map info
1057 function g_Net_ReceiveResourceFile (resIndex: LongInt; var tf: TNetFileTransfer; strm: TStream): Integer;
1058 var
1059 ev: ENetEvent;
1060 rMsgId: Byte;
1061 Ptr: Pointer;
1062 msg: TMsg;
1063 freePacket: Boolean = false;
1064 ct, ett: Int64;
1065 status: cint;
1066 nextChunk: Integer = 0;
1067 chunkTotal: Integer;
1068 chunk: Integer;
1069 csize: Integer;
1070 buf: PChar = nil;
1071 resumed: Boolean;
1072 //stx: Int64;
1073 begin
1074 tf.resumed := false;
1075 e_LogWritefln('file `%s`, size=%d (%d)', [tf.diskName, Integer(strm.size), tf.size], TMsgType.Notify);
1076 // check if we should resume downloading
1077 resumed := (strm.size > tf.chunkSize) and (strm.size < tf.size);
1078 // send request
1079 trans_omsg.Clear();
1080 trans_omsg.Write(Byte(NTF_CLIENT_START));
1081 if resumed then chunk := strm.size div tf.chunkSize else chunk := 0;
1082 trans_omsg.Write(LongInt(chunk));
1083 if not ftransSendClientMsg(trans_omsg) then begin result := -1; exit; end;
1084
1085 strm.Seek(chunk*tf.chunkSize, soFromBeginning);
1086 chunkTotal := (tf.size+tf.chunkSize-1) div tf.chunkSize;
1087 e_LogWritefln('receiving file `%s` (%d chunks)', [tf.diskName, chunkTotal], TMsgType.Notify);
1088 g_Game_SetLoadingText('downloading "'+ExtractFileName(tf.diskName)+'"', chunkTotal, False);
1089 tf.resumed := resumed;
1090
1091 if (chunk > 0) then g_Game_StepLoading(chunk);
1092 nextChunk := chunk;
1093
1094 // wait for reply data
1095 FillChar(ev, SizeOf(ev), 0);
1096 Result := -1;
1097 GetMem(buf, tf.chunkSize);
1098 try
1099 ett := getNewTimeoutEnd();
1100 repeat
1101 //stx := -GetTimerMS();
1102 status := enet_host_service(NetHost, @ev, 300);
1103 if (status < 0) then
1104 begin
1105 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' network error', True);
1106 Result := -1;
1107 exit;
1108 end;
1109 if (status = 0) then
1110 begin
1111 // check for timeout
1112 ct := GetTimerMS();
1113 if (ct >= ett) then
1114 begin
1115 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' timeout reached', True);
1116 Result := -1;
1117 exit;
1118 end;
1119 end
1120 else
1121 begin
1122 // some event
1123 case ev.kind of
1124 ENET_EVENT_TYPE_RECEIVE:
1125 begin
1126 freePacket := true;
1127 if (ev.channelID <> NET_CHAN_DOWNLOAD_EX) then
1128 begin
1129 //e_LogWritefln('g_Net_Wait_Event: skip message from non-transfer channel', []);
1130 freePacket := false;
1131 g_Net_Client_HandlePacket(ev.packet, g_Net_ClientLightMsgHandler);
1132 if (g_Res_received_map_start < 0) then begin result := -666; exit; end;
1133 end
1134 else
1135 begin
1136 //stx := stx+GetTimerMS();
1137 //e_LogWritefln('g_Net_ReceiveResourceFile: stx=%d', [Integer(stx)]);
1138 //stx := -GetTimerMS();
1139 ett := getNewTimeoutEnd();
1140 if (ev.packet.dataLength < 1) then
1141 begin
1142 e_LogWritefln('g_Net_ReceiveResourceFile: invalid server packet (no data)', []);
1143 Result := -1;
1144 exit;
1145 end;
1146 Ptr := ev.packet^.data;
1147 rMsgId := Byte(Ptr^);
1148 if (rMsgId = NTF_SERVER_DONE) then
1149 begin
1150 e_LogWritefln('file transfer complete.', []);
1151 result := 0;
1152 exit;
1153 end
1154 else if (rMsgId = NTF_SERVER_CHUNK) then
1155 begin
1156 if not msg.Init(ev.packet^.data+1, ev.packet^.dataLength-1, True) then exit;
1157 chunk := msg.ReadLongInt();
1158 csize := msg.ReadLongInt();
1159 if (chunk <> nextChunk) then
1160 begin
1161 e_LogWritefln('received chunk %d, but expected chunk %d', [chunk, nextChunk]);
1162 Result := -1;
1163 exit;
1164 end;
1165 if (csize < 0) or (csize > tf.chunkSize) then
1166 begin
1167 e_LogWritefln('received chunk with size %d, but expected chunk size is %d', [csize, tf.chunkSize]);
1168 Result := -1;
1169 exit;
1170 end;
1171 //e_LogWritefln('got chunk #%d of #%d (csize=%d)', [chunk, (tf.size+tf.chunkSize-1) div tf.chunkSize, csize]);
1172 msg.ReadData(buf, csize);
1173 strm.WriteBuffer(buf^, csize);
1174 nextChunk := chunk+1;
1175 g_Game_StepLoading();
1176 // send ack
1177 trans_omsg.Clear();
1178 trans_omsg.Write(Byte(NTF_CLIENT_ACK));
1179 trans_omsg.Write(LongInt(chunk));
1180 if not ftransSendClientMsg(trans_omsg) then begin result := -1; exit; end;
1181 end
1182 else if (rMsgId = NTF_SERVER_ABORT) then
1183 begin
1184 e_LogWritefln('g_Net_ReceiveResourceFile: server aborted transfer', []);
1185 Result := 2;
1186 exit;
1187 end
1188 else
1189 begin
1190 e_LogWritefln('g_Net_ReceiveResourceFile: invalid server packet type', []);
1191 Result := -1;
1192 exit;
1193 end;
1194 //stx := stx+GetTimerMS();
1195 //e_LogWritefln('g_Net_ReceiveResourceFile: process stx=%d', [Integer(stx)]);
1196 end;
1197 end;
1198 ENET_EVENT_TYPE_DISCONNECT:
1199 begin
1200 if (ev.data <= NET_DISC_MAX) then
1201 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' ' + _lc[TStrings_Locale(Cardinal(I_NET_DISC_NONE) + ev.data)], True);
1202 Result := -1;
1203 exit;
1204 end;
1205 else
1206 begin
1207 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' unknown ENet event ' + IntToStr(Ord(ev.kind)), True);
1208 result := -1;
1209 exit;
1210 end;
1211 end;
1212 if (freePacket) then begin freePacket := false; enet_packet_destroy(ev.packet); end;
1213 end;
1214 ProcessLoading();
1215 if g_Net_UserRequestExit() then
1216 begin
1217 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' user abort', True);
1218 Result := 1;
1219 exit;
1220 end;
1221 until false;
1222 finally
1223 FreeMem(buf);
1224 if (freePacket) then enet_packet_destroy(ev.packet);
1225 end;
1226 end;
1227
1228
1229 //**************************************************************************
1230 //
1231 // common functions
1232 //
1233 //**************************************************************************
1234
1235 function g_Net_FindSlot(): Integer;
1236 var
1237 I: Integer;
1238 F: Boolean;
1239 N, C: Integer;
1240 begin
1241 N := -1;
1242 F := False;
1243 C := 0;
1244 for I := Low(NetClients) to High(NetClients) do
1245 begin
1246 if NetClients[I].Used then
1247 Inc(C)
1248 else
1249 if not F then
1250 begin
1251 F := True;
1252 N := I;
1253 end;
1254 end;
1255 if C >= NetMaxClients then
1256 begin
1257 Result := -1;
1258 Exit;
1259 end;
1260
1261 if not F then
1262 begin
1263 if (Length(NetClients) >= NetMaxClients) then
1264 N := -1
1265 else
1266 begin
1267 SetLength(NetClients, Length(NetClients) + 1);
1268 N := High(NetClients);
1269 end;
1270 end;
1271
1272 if N >= 0 then
1273 begin
1274 NetClients[N].Used := True;
1275 NetClients[N].ID := N;
1276 NetClients[N].RequestedFullUpdate := False;
1277 NetClients[N].RCONAuth := False;
1278 NetClients[N].Voted := False;
1279 NetClients[N].Player := 0;
1280 clearNetClientTransfers(NetClients[N]); // just in case
1281 end;
1282
1283 Result := N;
1284 end;
1285
1286 function g_Net_Init(): Boolean;
1287 var
1288 F: TextFile;
1289 IPstr: string;
1290 IP: LongWord;
1291 begin
1292 NetIn.Clear();
1293 NetOut.Clear();
1294 NetBuf[NET_UNRELIABLE].Clear();
1295 NetBuf[NET_RELIABLE].Clear();
1296 //SetLength(NetClients, 0);
1297 clearNetClients(true); // clear array
1298 NetPeer := nil;
1299 NetHost := nil;
1300 NetMyID := -1;
1301 NetPlrUID1 := -1;
1302 NetPlrUID2 := -1;
1303 NetAddr.port := 25666;
1304 SetLength(NetBannedHosts, 0);
1305 if FileExists(DataDir + BANLIST_FILENAME) then
1306 begin
1307 Assign(F, DataDir + BANLIST_FILENAME);
1308 Reset(F);
1309 while not EOF(F) do
1310 begin
1311 Readln(F, IPstr);
1312 if StrToIp(IPstr, IP) then
1313 g_Net_BanHost(IP);
1314 end;
1315 CloseFile(F);
1316 g_Net_SaveBanList();
1317 end;
1318
1319 Result := (enet_initialize() = 0);
1320 end;
1321
1322 procedure g_Net_Flush();
1323 var
1324 T: Integer;
1325 P: pENetPacket;
1326 F, Chan: enet_uint32;
1327 I: Integer;
1328 begin
1329 F := 0;
1330 Chan := NET_CHAN_GAME;
1331
1332 if NetMode = NET_SERVER then
1333 for T := NET_UNRELIABLE to NET_RELIABLE do
1334 begin
1335 if NetBuf[T].CurSize > 0 then
1336 begin
1337 P := enet_packet_create(NetBuf[T].Data, NetBuf[T].CurSize, F);
1338 if not Assigned(P) then continue;
1339 enet_host_broadcast(NetHost, Chan, P);
1340 NetBuf[T].Clear();
1341 end;
1342
1343 for I := Low(NetClients) to High(NetClients) do
1344 begin
1345 if not NetClients[I].Used then continue;
1346 if NetClients[I].NetOut[T].CurSize <= 0 then continue;
1347 P := enet_packet_create(NetClients[I].NetOut[T].Data, NetClients[I].NetOut[T].CurSize, F);
1348 if not Assigned(P) then continue;
1349 enet_peer_send(NetClients[I].Peer, Chan, P);
1350 NetClients[I].NetOut[T].Clear();
1351 end;
1352
1353 // next and last iteration is always RELIABLE
1354 F := LongWord(ENET_PACKET_FLAG_RELIABLE);
1355 Chan := NET_CHAN_IMPORTANT;
1356 end
1357 else if NetMode = NET_CLIENT then
1358 for T := NET_UNRELIABLE to NET_RELIABLE do
1359 begin
1360 if NetBuf[T].CurSize > 0 then
1361 begin
1362 P := enet_packet_create(NetBuf[T].Data, NetBuf[T].CurSize, F);
1363 if not Assigned(P) then continue;
1364 enet_peer_send(NetPeer, Chan, P);
1365 NetBuf[T].Clear();
1366 end;
1367 // next and last iteration is always RELIABLE
1368 F := LongWord(ENET_PACKET_FLAG_RELIABLE);
1369 Chan := NET_CHAN_IMPORTANT;
1370 end;
1371 end;
1372
1373 procedure g_Net_Cleanup();
1374 begin
1375 NetIn.Clear();
1376 NetOut.Clear();
1377 NetBuf[NET_UNRELIABLE].Clear();
1378 NetBuf[NET_RELIABLE].Clear();
1379
1380 //SetLength(NetClients, 0);
1381 clearNetClients(true); // clear array
1382 NetClientCount := 0;
1383
1384 NetPeer := nil;
1385 NetHost := nil;
1386 g_Net_Slist_Disconnect(false); // do not spam console
1387 NetMyID := -1;
1388 NetPlrUID1 := -1;
1389 NetPlrUID2 := -1;
1390 NetState := NET_STATE_NONE;
1391
1392 NetPongSock := ENET_SOCKET_NULL;
1393
1394 NetTimeToMaster := 0;
1395 NetTimeToUpdate := 0;
1396 NetTimeToReliable := 0;
1397
1398 NetMode := NET_NONE;
1399
1400 if NetPortThread <> NilThreadId then
1401 WaitForThreadTerminate(NetPortThread, 66666);
1402
1403 NetPortThread := NilThreadId;
1404 g_Net_UnforwardPorts();
1405
1406 if NetDump then
1407 g_Net_DumpEnd();
1408 end;
1409
1410 procedure g_Net_Free();
1411 begin
1412 g_Net_Cleanup();
1413
1414 enet_deinitialize();
1415 NetInitDone := False;
1416 end;
1417
1418
1419 //**************************************************************************
1420 //
1421 // SERVER FUNCTIONS
1422 //
1423 //**************************************************************************
1424
1425 function ForwardThread(Param: Pointer): PtrInt;
1426 begin
1427 Result := 0;
1428 if not g_Net_ForwardPorts() then Result := -1;
1429 end;
1430
1431 function g_Net_Host(IPAddr: LongWord; Port: enet_uint16; MaxClients: Cardinal = 16): Boolean;
1432 begin
1433 if NetMode <> NET_NONE then
1434 begin
1435 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_INGAME]);
1436 Result := False;
1437 Exit;
1438 end;
1439
1440 Result := True;
1441
1442 g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST], [Port]));
1443 if not NetInitDone then
1444 begin
1445 if (not g_Net_Init()) then
1446 begin
1447 g_Console_Add(_lc[I_NET_MSG_FERROR] + _lc[I_NET_ERR_ENET]);
1448 Result := False;
1449 Exit;
1450 end
1451 else
1452 NetInitDone := True;
1453 end;
1454
1455 NetAddr.host := IPAddr;
1456 NetAddr.port := Port;
1457
1458 if NetForwardPorts then NetPortThread := BeginThread(ForwardThread);
1459
1460 NetHost := enet_host_create(@NetAddr, NET_MAXCLIENTS, NET_CHANS, 0, 0);
1461
1462 if (NetHost = nil) then
1463 begin
1464 g_Console_Add(_lc[I_NET_MSG_ERROR] + Format(_lc[I_NET_ERR_HOST], [Port]));
1465 Result := False;
1466 g_Net_Cleanup;
1467 Exit;
1468 end;
1469
1470 NetPongSock := enet_socket_create(ENET_SOCKET_TYPE_DATAGRAM);
1471 if NetPongSock <> ENET_SOCKET_NULL then
1472 begin
1473 NetPongAddr.host := IPAddr;
1474 NetPongAddr.port := NET_PING_PORT;
1475 if enet_socket_bind(NetPongSock, @NetPongAddr) < 0 then
1476 begin
1477 enet_socket_destroy(NetPongSock);
1478 NetPongSock := ENET_SOCKET_NULL;
1479 end
1480 else
1481 enet_socket_set_option(NetPongSock, ENET_SOCKOPT_NONBLOCK, 1);
1482 end;
1483
1484 NetMode := NET_SERVER;
1485 NetOut.Clear();
1486 NetBuf[NET_UNRELIABLE].Clear();
1487 NetBuf[NET_RELIABLE].Clear();
1488
1489 if NetDump then
1490 g_Net_DumpStart();
1491 end;
1492
1493 procedure g_Net_Host_Die();
1494 var
1495 I: Integer;
1496 begin
1497 if NetMode <> NET_SERVER then Exit;
1498
1499 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_DISCALL]);
1500 for I := 0 to High(NetClients) do
1501 if NetClients[I].Used then
1502 enet_peer_disconnect(NetClients[I].Peer, NET_DISC_DOWN);
1503
1504 while enet_host_service(NetHost, @NetEvent, 1000) > 0 do
1505 if NetEvent.kind = ENET_EVENT_TYPE_RECEIVE then
1506 enet_packet_destroy(NetEvent.packet);
1507
1508 for I := 0 to High(NetClients) do
1509 if NetClients[I].Used then
1510 begin
1511 FreeMemory(NetClients[I].Peer^.data);
1512 NetClients[I].Peer^.data := nil;
1513 enet_peer_reset(NetClients[I].Peer);
1514 NetClients[I].Peer := nil;
1515 NetClients[I].Used := False;
1516 NetClients[I].NetOut[NET_UNRELIABLE].Free();
1517 NetClients[I].NetOut[NET_RELIABLE].Free();
1518 end;
1519
1520 clearNetClients(false); // don't clear array
1521 if (g_Net_Slist_IsConnectionActive) then g_Net_Slist_Disconnect;
1522 if NetPongSock <> ENET_SOCKET_NULL then
1523 enet_socket_destroy(NetPongSock);
1524
1525 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_DIE]);
1526 enet_host_destroy(NetHost);
1527
1528 NetMode := NET_NONE;
1529
1530 g_Net_Cleanup;
1531 e_WriteLog('NET: Server stopped', TMsgType.Notify);
1532 end;
1533
1534
1535 procedure g_Net_Host_Send(ID: Integer; Reliable: Boolean; Chan: Byte = NET_CHAN_GAME);
1536 var
1537 T: Integer;
1538 begin
1539 if (Reliable) then
1540 T := NET_RELIABLE
1541 else
1542 T := NET_UNRELIABLE;
1543
1544 if (ID >= 0) then
1545 begin
1546 if ID > High(NetClients) then Exit;
1547 if NetClients[ID].Peer = nil then Exit;
1548 // write size first
1549 NetClients[ID].NetOut[T].Write(Integer(NetOut.CurSize));
1550 NetClients[ID].NetOut[T].Write(NetOut);
1551 end
1552 else
1553 begin
1554 // write size first
1555 NetBuf[T].Write(Integer(NetOut.CurSize));
1556 NetBuf[T].Write(NetOut);
1557 end;
1558
1559 if NetDump then g_Net_DumpSendBuffer();
1560 NetOut.Clear();
1561 end;
1562
1563 procedure g_Net_Host_CheckPings();
1564 var
1565 ClAddr: ENetAddress;
1566 Buf: ENetBuffer;
1567 Len: Integer;
1568 ClTime: Int64;
1569 Ping: array [0..9] of Byte;
1570 NPl: Byte;
1571 begin
1572 if NetPongSock = ENET_SOCKET_NULL then Exit;
1573
1574 Buf.data := Addr(Ping[0]);
1575 Buf.dataLength := 2+8;
1576
1577 Ping[0] := 0;
1578
1579 Len := enet_socket_receive(NetPongSock, @ClAddr, @Buf, 1);
1580 if Len < 0 then Exit;
1581
1582 if (Ping[0] = Ord('D')) and (Ping[1] = Ord('F')) then
1583 begin
1584 ClTime := Int64(Addr(Ping[2])^);
1585
1586 NetOut.Clear();
1587 NetOut.Write(Byte(Ord('D')));
1588 NetOut.Write(Byte(Ord('F')));
1589 NetOut.Write(NetPort);
1590 NetOut.Write(ClTime);
1591 g_Net_Slist_WriteInfo();
1592 NPl := 0;
1593 if gPlayer1 <> nil then Inc(NPl);
1594 if gPlayer2 <> nil then Inc(NPl);
1595 NetOut.Write(NPl);
1596 NetOut.Write(gNumBots);
1597
1598 Buf.data := NetOut.Data;
1599 Buf.dataLength := NetOut.CurSize;
1600 enet_socket_send(NetPongSock, @ClAddr, @Buf, 1);
1601
1602 NetOut.Clear();
1603 end;
1604 end;
1605
1606
1607 function g_Net_Host_Update(): enet_size_t;
1608 var
1609 IP: string;
1610 Port: Word;
1611 ID: Integer;
1612 TC: pTNetClient;
1613 TP: TPlayer;
1614 begin
1615 IP := '';
1616 Result := 0;
1617
1618 if NetUseMaster then g_Net_Slist_Check;
1619 g_Net_Host_CheckPings;
1620
1621 while (enet_host_service(NetHost, @NetEvent, 0) > 0) do
1622 begin
1623 case (NetEvent.kind) of
1624 ENET_EVENT_TYPE_CONNECT:
1625 begin
1626 IP := IpToStr(NetEvent.Peer^.address.host);
1627 Port := NetEvent.Peer^.address.port;
1628 g_Console_Add(_lc[I_NET_MSG] +
1629 Format(_lc[I_NET_MSG_HOST_CONN], [IP, Port]));
1630
1631 if (NetEvent.data <> NET_PROTOCOL_VER) then
1632 begin
1633 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_REJECT] +
1634 _lc[I_NET_DISC_PROTOCOL]);
1635 NetEvent.peer^.data := GetMemory(SizeOf(Byte));
1636 Byte(NetEvent.peer^.data^) := 255;
1637 enet_peer_disconnect(NetEvent.peer, NET_DISC_PROTOCOL);
1638 enet_host_flush(NetHost);
1639 Exit;
1640 end;
1641
1642 ID := g_Net_FindSlot();
1643
1644 if ID < 0 then
1645 begin
1646 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_REJECT] +
1647 _lc[I_NET_DISC_FULL]);
1648 NetEvent.Peer^.data := GetMemory(SizeOf(Byte));
1649 Byte(NetEvent.peer^.data^) := 255;
1650 enet_peer_disconnect(NetEvent.peer, NET_DISC_FULL);
1651 enet_host_flush(NetHost);
1652 Exit;
1653 end;
1654
1655 NetClients[ID].Peer := NetEvent.peer;
1656 NetClients[ID].Peer^.data := GetMemory(SizeOf(Byte));
1657 Byte(NetClients[ID].Peer^.data^) := ID;
1658 NetClients[ID].State := NET_STATE_AUTH;
1659 NetClients[ID].RCONAuth := False;
1660 NetClients[ID].NetOut[NET_UNRELIABLE].Alloc(NET_BUFSIZE*2);
1661 NetClients[ID].NetOut[NET_RELIABLE].Alloc(NET_BUFSIZE*2);
1662 clearNetClientTransfers(NetClients[ID]); // just in case
1663
1664 enet_peer_timeout(NetEvent.peer, ENET_PEER_TIMEOUT_LIMIT * 2, ENET_PEER_TIMEOUT_MINIMUM * 2, ENET_PEER_TIMEOUT_MAXIMUM * 2);
1665
1666 Inc(NetClientCount);
1667 g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST_ADD], [ID]));
1668 end;
1669
1670 ENET_EVENT_TYPE_RECEIVE:
1671 begin
1672 //e_LogWritefln('RECEIVE: chan=%u', [NetEvent.channelID]);
1673 if (NetEvent.channelID = NET_CHAN_DOWNLOAD_EX) then
1674 begin
1675 ProcessDownloadExPacket();
1676 end
1677 else
1678 begin
1679 ID := Byte(NetEvent.peer^.data^);
1680 if ID > High(NetClients) then Exit;
1681 TC := @NetClients[ID];
1682
1683 if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength);
1684 g_Net_Host_HandlePacket(TC, NetEvent.packet, g_Net_HostMsgHandler);
1685 end;
1686 end;
1687
1688 ENET_EVENT_TYPE_DISCONNECT:
1689 begin
1690 ID := Byte(NetEvent.peer^.data^);
1691 if ID > High(NetClients) then Exit;
1692 clearNetClient(NetClients[ID]);
1693 TC := @NetClients[ID];
1694 if TC = nil then Exit;
1695
1696 if not (TC^.Used) then Exit;
1697
1698 TP := g_Player_Get(TC^.Player);
1699
1700 if TP <> nil then
1701 begin
1702 TP.Lives := 0;
1703 TP.Kill(K_SIMPLEKILL, 0, HIT_DISCON);
1704 g_Console_Add(Format(_lc[I_PLAYER_LEAVE], [TP.Name]), True);
1705 e_WriteLog('NET: Client ' + TP.Name + ' [' + IntToStr(ID) + '] disconnected.', TMsgType.Notify);
1706 g_Player_Remove(TP.UID);
1707 end;
1708
1709 TC^.Used := False;
1710 TC^.State := NET_STATE_NONE;
1711 TC^.Peer := nil;
1712 TC^.Player := 0;
1713 TC^.RequestedFullUpdate := False;
1714 TC^.NetOut[NET_UNRELIABLE].Free();
1715 TC^.NetOut[NET_RELIABLE].Free();
1716
1717 FreeMemory(NetEvent.peer^.data);
1718 NetEvent.peer^.data := nil;
1719 g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST_DISC], [ID]));
1720 Dec(NetClientCount);
1721
1722 if NetUseMaster then g_Net_Slist_Update;
1723 end;
1724 end;
1725 end;
1726 end;
1727
1728
1729 //**************************************************************************
1730 //
1731 // CLIENT FUNCTIONS
1732 //
1733 //**************************************************************************
1734
1735 procedure g_Net_Disconnect(Forced: Boolean = False);
1736 begin
1737 if NetMode <> NET_CLIENT then Exit;
1738 if (NetHost = nil) or (NetPeer = nil) then Exit;
1739
1740 if not Forced then
1741 begin
1742 enet_peer_disconnect(NetPeer, NET_DISC_NONE);
1743
1744 while (enet_host_service(NetHost, @NetEvent, 1500) > 0) do
1745 begin
1746 if (NetEvent.kind = ENET_EVENT_TYPE_DISCONNECT) then
1747 begin
1748 NetPeer := nil;
1749 break;
1750 end;
1751
1752 if (NetEvent.kind = ENET_EVENT_TYPE_RECEIVE) then
1753 enet_packet_destroy(NetEvent.packet);
1754 end;
1755
1756 if NetPeer <> nil then
1757 begin
1758 enet_peer_reset(NetPeer);
1759 NetPeer := nil;
1760 end;
1761 end
1762 else
1763 begin
1764 e_WriteLog('NET: Kicked from server: ' + IntToStr(NetEvent.data), TMsgType.Notify);
1765 if (NetEvent.data <= NET_DISC_MAX) then
1766 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_KICK] +
1767 _lc[TStrings_Locale(Cardinal(I_NET_DISC_NONE) + NetEvent.data)], True);
1768 end;
1769
1770 if NetHost <> nil then
1771 begin
1772 enet_host_destroy(NetHost);
1773 NetHost := nil;
1774 end;
1775 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_CLIENT_DISC]);
1776
1777 g_Net_Cleanup;
1778 e_WriteLog('NET: Disconnected', TMsgType.Notify);
1779 end;
1780
1781 procedure g_Net_Client_Send(Reliable: Boolean; Chan: Byte = NET_CHAN_GAME);
1782 var
1783 T: Integer;
1784 begin
1785 if (Reliable) then
1786 T := NET_RELIABLE
1787 else
1788 T := NET_UNRELIABLE;
1789
1790 // write size first
1791 NetBuf[T].Write(Integer(NetOut.CurSize));
1792 NetBuf[T].Write(NetOut);
1793
1794 if NetDump then g_Net_DumpSendBuffer();
1795 NetOut.Clear();
1796 g_Net_Flush(); // FIXME: for now, send immediately
1797 end;
1798
1799 function g_Net_Client_Update(): enet_size_t;
1800 begin
1801 Result := 0;
1802 while (enet_host_service(NetHost, @NetEvent, 0) > 0) do
1803 begin
1804 case NetEvent.kind of
1805 ENET_EVENT_TYPE_RECEIVE:
1806 begin
1807 if (NetEvent.channelID = NET_CHAN_DOWNLOAD_EX) then continue; // ignore all download packets, they're processed by separate code
1808 if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength);
1809 g_Net_Client_HandlePacket(NetEvent.packet, g_Net_ClientMsgHandler);
1810 end;
1811
1812 ENET_EVENT_TYPE_DISCONNECT:
1813 begin
1814 g_Net_Disconnect(True);
1815 Result := 1;
1816 Exit;
1817 end;
1818 end;
1819 end
1820 end;
1821
1822 function g_Net_Client_UpdateWhileLoading(): enet_size_t;
1823 begin
1824 Result := 0;
1825 while (enet_host_service(NetHost, @NetEvent, 0) > 0) do
1826 begin
1827 case NetEvent.kind of
1828 ENET_EVENT_TYPE_RECEIVE:
1829 begin
1830 if (NetEvent.channelID = NET_CHAN_DOWNLOAD_EX) then continue; // ignore all download packets, they're processed by separate code
1831 if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength);
1832 g_Net_Client_HandlePacket(NetEvent.packet, g_Net_ClientLightMsgHandler);
1833 end;
1834
1835 ENET_EVENT_TYPE_DISCONNECT:
1836 begin
1837 g_Net_Disconnect(True);
1838 Result := 1;
1839 Exit;
1840 end;
1841 end;
1842 end;
1843 g_Net_Flush();
1844 end;
1845
1846 function g_Net_Connect(IP: string; Port: enet_uint16): Boolean;
1847 var
1848 OuterLoop: Boolean;
1849 TimeoutTime, T: Int64;
1850 begin
1851 if NetMode <> NET_NONE then
1852 begin
1853 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_ERR_INGAME], True);
1854 Result := False;
1855 Exit;
1856 end;
1857
1858 Result := True;
1859
1860 g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_CLIENT_CONN],
1861 [IP, Port]));
1862 if not NetInitDone then
1863 begin
1864 if (not g_Net_Init()) then
1865 begin
1866 g_Console_Add(_lc[I_NET_MSG_FERROR] + _lc[I_NET_ERR_ENET], True);
1867 Result := False;
1868 Exit;
1869 end
1870 else
1871 NetInitDone := True;
1872 end;
1873
1874 NetHost := enet_host_create(nil, 1, NET_CHANS, 0, 0);
1875
1876 if (NetHost = nil) then
1877 begin
1878 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CLIENT], True);
1879 g_Net_Cleanup;
1880 Result := False;
1881 Exit;
1882 end;
1883
1884 enet_address_set_host(@NetAddr, PChar(Addr(IP[1])));
1885 NetAddr.port := Port;
1886
1887 NetPeer := enet_host_connect(NetHost, @NetAddr, NET_CHANS, NET_PROTOCOL_VER);
1888
1889 if (NetPeer = nil) then
1890 begin
1891 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CLIENT], True);
1892 enet_host_destroy(NetHost);
1893 g_Net_Cleanup;
1894 Result := False;
1895 Exit;
1896 end;
1897
1898 // предупредить что ждем слишком долго через N секунд
1899 TimeoutTime := GetTimer() + NET_CONNECT_TIMEOUT;
1900
1901 OuterLoop := True;
1902 while OuterLoop do
1903 begin
1904 while (enet_host_service(NetHost, @NetEvent, 0) > 0) do
1905 begin
1906 if (NetEvent.kind = ENET_EVENT_TYPE_CONNECT) then
1907 begin
1908 g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_CLIENT_DONE]);
1909 NetMode := NET_CLIENT;
1910 NetOut.Clear();
1911 enet_peer_timeout(NetPeer, ENET_PEER_TIMEOUT_LIMIT * 2, ENET_PEER_TIMEOUT_MINIMUM * 2, ENET_PEER_TIMEOUT_MAXIMUM * 2);
1912 NetClientIP := IP;
1913 NetClientPort := Port;
1914 if NetDump then
1915 g_Net_DumpStart();
1916 Exit;
1917 end;
1918 end;
1919
1920 T := GetTimer();
1921 if T > TimeoutTime then
1922 begin
1923 TimeoutTime := T + NET_CONNECT_TIMEOUT * 100; // одного предупреждения хватит
1924 g_Console_Add(_lc[I_NET_MSG_TIMEOUT_WARN], True);
1925 g_Console_Add(Format(_lc[I_NET_MSG_PORTS], [Integer(Port), Integer(NET_PING_PORT)]), True);
1926 end;
1927
1928 ProcessLoading(true);
1929
1930 if e_KeyPressed(IK_SPACE) or e_KeyPressed(IK_ESCAPE) or e_KeyPressed(VK_ESCAPE) or
1931 e_KeyPressed(JOY0_JUMP) or e_KeyPressed(JOY1_JUMP) or e_KeyPressed(JOY2_JUMP) or e_KeyPressed(JOY3_JUMP) then
1932 OuterLoop := False;
1933 end;
1934
1935 g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_TIMEOUT], True);
1936 g_Console_Add(Format(_lc[I_NET_MSG_PORTS], [Integer(Port), Integer(NET_PING_PORT)]), True);
1937 if NetPeer <> nil then enet_peer_reset(NetPeer);
1938 if NetHost <> nil then
1939 begin
1940 enet_host_destroy(NetHost);
1941 NetHost := nil;
1942 end;
1943 g_Net_Cleanup();
1944 Result := False;
1945 end;
1946
1947 function IpToStr(IP: LongWord): string;
1948 var
1949 Ptr: Pointer;
1950 begin
1951 Ptr := Addr(IP);
1952 Result := IntToStr(PByte(Ptr + 0)^) + '.';
1953 Result := Result + IntToStr(PByte(Ptr + 1)^) + '.';
1954 Result := Result + IntToStr(PByte(Ptr + 2)^) + '.';
1955 Result := Result + IntToStr(PByte(Ptr + 3)^);
1956 end;
1957
1958 function StrToIp(IPstr: string; var IP: LongWord): Boolean;
1959 var
1960 EAddr: ENetAddress;
1961 begin
1962 Result := enet_address_set_host(@EAddr, PChar(@IPstr[1])) = 0;
1963 IP := EAddr.host;
1964 end;
1965
1966 function g_Net_Client_ByName(Name: string): pTNetClient;
1967 var
1968 a: Integer;
1969 pl: TPlayer;
1970 begin
1971 Result := nil;
1972 for a := Low(NetClients) to High(NetClients) do
1973 if (NetClients[a].Used) and (NetClients[a].State = NET_STATE_GAME) then
1974 begin
1975 pl := g_Player_Get(NetClients[a].Player);
1976 if pl = nil then continue;
1977 if Copy(LowerCase(pl.Name), 1, Length(Name)) <> LowerCase(Name) then continue;
1978 if NetClients[a].Peer <> nil then
1979 begin
1980 Result := @NetClients[a];
1981 Exit;
1982 end;
1983 end;
1984 end;
1985
1986 function g_Net_Client_ByPlayer(PID: Word): pTNetClient;
1987 var
1988 a: Integer;
1989 begin
1990 Result := nil;
1991 for a := Low(NetClients) to High(NetClients) do
1992 if (NetClients[a].Used) and (NetClients[a].State = NET_STATE_GAME) then
1993 if NetClients[a].Player = PID then
1994 begin
1995 Result := @NetClients[a];
1996 Exit;
1997 end;
1998 end;
1999
2000 function g_Net_ClientName_ByID(ID: Integer): string;
2001 var
2002 a: Integer;
2003 pl: TPlayer;
2004 begin
2005 Result := '';
2006 if ID = NET_EVERYONE then
2007 Exit;
2008 for a := Low(NetClients) to High(NetClients) do
2009 if (NetClients[a].ID = ID) and (NetClients[a].Used) and (NetClients[a].State = NET_STATE_GAME) then
2010 begin
2011 pl := g_Player_Get(NetClients[a].Player);
2012 if pl = nil then Exit;
2013 Result := pl.Name;
2014 end;
2015 end;
2016
2017 procedure g_Net_SendData(Data: AByte; peer: pENetPeer; Reliable: Boolean; Chan: Byte = NET_CHAN_DOWNLOAD);
2018 var
2019 P: pENetPacket;
2020 F: enet_uint32;
2021 dataLength: Cardinal;
2022 begin
2023 dataLength := Length(Data);
2024
2025 if (Reliable) then
2026 F := LongWord(ENET_PACKET_FLAG_RELIABLE)
2027 else
2028 F := 0;
2029
2030 if (peer <> nil) then
2031 begin
2032 P := enet_packet_create(@Data[0], dataLength, F);
2033 if not Assigned(P) then Exit;
2034 enet_peer_send(peer, Chan, P);
2035 end
2036 else
2037 begin
2038 P := enet_packet_create(@Data[0], dataLength, F);
2039 if not Assigned(P) then Exit;
2040 enet_host_broadcast(NetHost, Chan, P);
2041 end;
2042
2043 enet_host_flush(NetHost);
2044 end;
2045
2046 function g_Net_IsHostBanned(IP: LongWord; Perm: Boolean = False): Boolean;
2047 var
2048 I: Integer;
2049 begin
2050 Result := False;
2051 if NetBannedHosts = nil then
2052 Exit;
2053 for I := 0 to High(NetBannedHosts) do
2054 if (NetBannedHosts[I].IP = IP) and ((not Perm) or (NetBannedHosts[I].Perm)) then
2055 begin
2056 Result := True;
2057 break;
2058 end;
2059 end;
2060
2061 procedure g_Net_BanHost(IP: LongWord; Perm: Boolean = True); overload;
2062 var
2063 I, P: Integer;
2064 begin
2065 if IP = 0 then
2066 Exit;
2067 if g_Net_IsHostBanned(IP, Perm) then
2068 Exit;
2069
2070 P := -1;
2071 for I := Low(NetBannedHosts) to High(NetBannedHosts) do
2072 if NetBannedHosts[I].IP = 0 then
2073 begin
2074 P := I;
2075 break;
2076 end;
2077
2078 if P < 0 then
2079 begin
2080 SetLength(NetBannedHosts, Length(NetBannedHosts) + 1);
2081 P := High(NetBannedHosts);
2082 end;
2083
2084 NetBannedHosts[P].IP := IP;
2085 NetBannedHosts[P].Perm := Perm;
2086 end;
2087
2088 procedure g_Net_BanHost(IP: string; Perm: Boolean = True); overload;
2089 var
2090 a: LongWord;
2091 b: Boolean;
2092 begin
2093 b := StrToIp(IP, a);
2094 if b then
2095 g_Net_BanHost(a, Perm);
2096 end;
2097
2098 procedure g_Net_UnbanNonPermHosts();
2099 var
2100 I: Integer;
2101 begin
2102 if NetBannedHosts = nil then
2103 Exit;
2104 for I := Low(NetBannedHosts) to High(NetBannedHosts) do
2105 if (NetBannedHosts[I].IP > 0) and not NetBannedHosts[I].Perm then
2106 begin
2107 NetBannedHosts[I].IP := 0;
2108 NetBannedHosts[I].Perm := True;
2109 end;
2110 end;
2111
2112 function g_Net_UnbanHost(IP: string): Boolean; overload;
2113 var
2114 a: LongWord;
2115 begin
2116 Result := StrToIp(IP, a);
2117 if Result then
2118 Result := g_Net_UnbanHost(a);
2119 end;
2120
2121 function g_Net_UnbanHost(IP: LongWord): Boolean; overload;
2122 var
2123 I: Integer;
2124 begin
2125 Result := False;
2126 if IP = 0 then
2127 Exit;
2128 if NetBannedHosts = nil then
2129 Exit;
2130 for I := 0 to High(NetBannedHosts) do
2131 if NetBannedHosts[I].IP = IP then
2132 begin
2133 NetBannedHosts[I].IP := 0;
2134 NetBannedHosts[I].Perm := True;
2135 Result := True;
2136 // no break here to clear all bans of this host, perm and non-perm
2137 end;
2138 end;
2139
2140 procedure g_Net_SaveBanList();
2141 var
2142 F: TextFile;
2143 I: Integer;
2144 begin
2145 Assign(F, DataDir + BANLIST_FILENAME);
2146 Rewrite(F);
2147 if NetBannedHosts <> nil then
2148 for I := 0 to High(NetBannedHosts) do
2149 if NetBannedHosts[I].Perm and (NetBannedHosts[I].IP > 0) then
2150 Writeln(F, IpToStr(NetBannedHosts[I].IP));
2151 CloseFile(F);
2152 end;
2153
2154 procedure g_Net_DumpStart();
2155 begin
2156 if NetMode = NET_SERVER then
2157 NetDumpFile := createDiskFile(NETDUMP_FILENAME + '_server')
2158 else
2159 NetDumpFile := createDiskFile(NETDUMP_FILENAME + '_client');
2160 end;
2161
2162 procedure g_Net_DumpSendBuffer();
2163 begin
2164 writeInt(NetDumpFile, gTime);
2165 writeInt(NetDumpFile, LongWord(NetOut.CurSize));
2166 writeInt(NetDumpFile, Byte(1));
2167 NetDumpFile.WriteBuffer(NetOut.Data^, NetOut.CurSize);
2168 end;
2169
2170 procedure g_Net_DumpRecvBuffer(Buf: penet_uint8; Len: LongWord);
2171 begin
2172 if (Buf = nil) or (Len = 0) then Exit;
2173 writeInt(NetDumpFile, gTime);
2174 writeInt(NetDumpFile, Len);
2175 writeInt(NetDumpFile, Byte(0));
2176 NetDumpFile.WriteBuffer(Buf^, Len);
2177 end;
2178
2179 procedure g_Net_DumpEnd();
2180 begin
2181 NetDumpFile.Free();
2182 NetDumpFile := nil;
2183 end;
2184
2185 function g_Net_ForwardPorts(ForwardPongPort: Boolean = True): Boolean;
2186 {$IFDEF USE_MINIUPNPC}
2187 var
2188 DevList: PUPNPDev;
2189 Urls: TUPNPUrls;
2190 Data: TIGDDatas;
2191 LanAddr: array [0..255] of Char;
2192 StrPort: AnsiString;
2193 Err, I: Integer;
2194 begin
2195 Result := False;
2196
2197 if NetPortForwarded = NetPort then
2198 begin
2199 Result := True;
2200 exit;
2201 end;
2202
2203 NetPongForwarded := False;
2204 NetPortForwarded := 0;
2205
2206 DevList := upnpDiscover(1000, nil, nil, 0, 0, 2, Addr(Err));
2207 if DevList = nil then
2208 begin
2209 conwritefln('port forwarding failed: upnpDiscover() failed: %d', [Err]);
2210 exit;
2211 end;
2212
2213 I := UPNP_GetValidIGD(DevList, @Urls, @Data, Addr(LanAddr[0]), 256);
2214
2215 if I = 0 then
2216 begin
2217 conwriteln('port forwarding failed: could not find an IGD device on this LAN');
2218 FreeUPNPDevList(DevList);
2219 FreeUPNPUrls(@Urls);
2220 exit;
2221 end;
2222
2223 StrPort := IntToStr(NetPort);
2224 I := UPNP_AddPortMapping(
2225 Urls.controlURL, Addr(data.first.servicetype[1]),
2226 PChar(StrPort), PChar(StrPort), Addr(LanAddr[0]), PChar('D2DF'),
2227 PChar('UDP'), nil, PChar('0')
2228 );
2229
2230 if I <> 0 then
2231 begin
2232 conwritefln('forwarding port %d failed: error %d', [NetPort, I]);
2233 FreeUPNPDevList(DevList);
2234 FreeUPNPUrls(@Urls);
2235 exit;
2236 end;
2237
2238 if ForwardPongPort then
2239 begin
2240 StrPort := IntToStr(NET_PING_PORT);
2241 I := UPNP_AddPortMapping(
2242 Urls.controlURL, Addr(data.first.servicetype[1]),
2243 PChar(StrPort), PChar(StrPort), Addr(LanAddr[0]), PChar('D2DF'),
2244 PChar('UDP'), nil, PChar('0')
2245 );
2246
2247 if I <> 0 then
2248 begin
2249 conwritefln('forwarding port %d failed: error %d', [NetPort + 1, I]);
2250 NetPongForwarded := False;
2251 end
2252 else
2253 begin
2254 conwritefln('forwarded port %d successfully', [NetPort + 1]);
2255 NetPongForwarded := True;
2256 end;
2257 end;
2258
2259 conwritefln('forwarded port %d successfully', [NetPort]);
2260 NetIGDControl := AnsiString(Urls.controlURL);
2261 NetIGDService := data.first.servicetype;
2262 NetPortForwarded := NetPort;
2263
2264 FreeUPNPDevList(DevList);
2265 FreeUPNPUrls(@Urls);
2266 Result := True;
2267 end;
2268 {$ELSE}
2269 begin
2270 Result := False;
2271 end;
2272 {$ENDIF}
2273
2274 procedure g_Net_UnforwardPorts();
2275 {$IFDEF USE_MINIUPNPC}
2276 var
2277 I: Integer;
2278 StrPort: AnsiString;
2279 begin
2280 if NetPortForwarded = 0 then Exit;
2281
2282 conwriteln('unforwarding ports...');
2283
2284 StrPort := IntToStr(NetPortForwarded);
2285 I := UPNP_DeletePortMapping(
2286 PChar(NetIGDControl), Addr(NetIGDService[1]),
2287 PChar(StrPort), PChar('UDP'), nil
2288 );
2289 conwritefln(' port %d: %d', [NetPortForwarded, I]);
2290
2291 if NetPongForwarded then
2292 begin
2293 NetPongForwarded := False;
2294 StrPort := IntToStr(NetPortForwarded + 1);
2295 I := UPNP_DeletePortMapping(
2296 PChar(NetIGDControl), Addr(NetIGDService[1]),
2297 PChar(StrPort), PChar('UDP'), nil
2298 );
2299 conwritefln(' port %d: %d', [NetPortForwarded + 1, I]);
2300 end;
2301
2302 NetPortForwarded := 0;
2303 end;
2304 {$ELSE}
2305 begin
2306 end;
2307 {$ENDIF}
2308
2309
2310 initialization
2311 conRegVar('cl_downloadtimeout', @g_Net_DownloadTimeout, 0.0, 1000000.0, '', 'timeout in seconds, 0 to disable it');
2312 SetLength(NetClients, 0);
2313 g_Net_DownloadTimeout := 60;
2314 NetIn.Alloc(NET_BUFSIZE);
2315 NetOut.Alloc(NET_BUFSIZE);
2316 NetBuf[NET_UNRELIABLE].Alloc(NET_BUFSIZE*2);
2317 NetBuf[NET_RELIABLE].Alloc(NET_BUFSIZE*2);
2318 trans_omsg.Alloc(NET_BUFSIZE);
2319 finalization
2320 NetIn.Free();
2321 NetOut.Free();
2322 NetBuf[NET_UNRELIABLE].Free();
2323 NetBuf[NET_RELIABLE].Free();
2324 end.
[MIRROR] a port of Doom 2D Forever to FPC/SDL
[25/02/2024 19:55:35]
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