(* Copyright (C) Doom 2D: Forever Developers * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see . *) {$INCLUDE ../shared/a_modes.inc} unit g_net; interface uses e_log, e_msg, ENet, Classes, MAPDEF{$IFDEF USE_MINIUPNPC}, miniupnpc;{$ELSE};{$ENDIF} const NET_PROTOCOL_VER = 174; NET_MAXCLIENTS = 24; NET_CHANS = 11; NET_CHAN_SERVICE = 0; NET_CHAN_IMPORTANT = 1; NET_CHAN_GAME = 2; NET_CHAN_PLAYER = 3; NET_CHAN_PLAYERPOS = 4; NET_CHAN_MONSTER = 5; NET_CHAN_MONSTERPOS = 6; NET_CHAN_LARGEDATA = 7; NET_CHAN_CHAT = 8; NET_CHAN_DOWNLOAD = 9; NET_CHAN_SHOTS = 10; NET_NONE = 0; NET_SERVER = 1; NET_CLIENT = 2; NET_BUFSIZE = $FFFF; NET_PING_PORT = $DF2D; NET_EVERYONE = -1; NET_DISC_NONE: enet_uint32 = 0; NET_DISC_PROTOCOL: enet_uint32 = 1; NET_DISC_VERSION: enet_uint32 = 2; NET_DISC_FULL: enet_uint32 = 3; NET_DISC_KICK: enet_uint32 = 4; NET_DISC_DOWN: enet_uint32 = 5; NET_DISC_PASSWORD: enet_uint32 = 6; NET_DISC_TEMPBAN: enet_uint32 = 7; NET_DISC_BAN: enet_uint32 = 8; NET_DISC_MAX: enet_uint32 = 8; NET_STATE_NONE = 0; NET_STATE_AUTH = 1; NET_STATE_GAME = 2; BANLIST_FILENAME = 'banlist.txt'; NETDUMP_FILENAME = 'netdump'; {$IFDEF FREEBSD} NilThreadId = nil; {$ELSE} NilThreadId = 0; {$ENDIF} type TNetClient = record ID: Byte; Used: Boolean; State: Byte; Peer: pENetPeer; Player: Word; RequestedFullUpdate: Boolean; RCONAuth: Boolean; Voted: Boolean; end; TBanRecord = record IP: LongWord; Perm: Boolean; end; pTNetClient = ^TNetClient; AByte = array of Byte; var NetInitDone: Boolean = False; NetMode: Byte = NET_NONE; NetDump: Boolean = False; NetServerName: string = 'Unnamed Server'; NetPassword: string = ''; NetPort: Word = 25666; NetAllowRCON: Boolean = False; NetRCONPassword: string = ''; NetTimeToUpdate: Cardinal = 0; NetTimeToReliable: Cardinal = 0; NetTimeToMaster: Cardinal = 0; NetHost: pENetHost = nil; NetPeer: pENetPeer = nil; NetEvent: ENetEvent; NetAddr: ENetAddress; NetPongAddr: ENetAddress; NetPongSock: ENetSocket = ENET_SOCKET_NULL; NetUseMaster: Boolean = True; NetSlistAddr: ENetAddress; NetSlistIP: string = 'mpms.doom2d.org'; NetSlistPort: Word = 25665; NetClientIP: string = '127.0.0.1'; NetClientPort: Word = 25666; NetIn, NetOut: TMsg; NetClients: array of TNetClient; NetClientCount: Byte = 0; NetMaxClients: Byte = 255; NetBannedHosts: array of TBanRecord; NetState: Integer = NET_STATE_NONE; NetMyID: Integer = -1; NetPlrUID1: Integer = -1; NetPlrUID2: Integer = -1; NetInterpLevel: Integer = 1; NetUpdateRate: Cardinal = 0; // as soon as possible NetRelupdRate: Cardinal = 18; // around two times a second NetMasterRate: Cardinal = 60000; NetForcePlayerUpdate: Boolean = False; NetPredictSelf: Boolean = True; NetForwardPorts: Boolean = False; NetGotEverything: Boolean = False; NetGotKeys: Boolean = False; {$IFDEF USE_MINIUPNPC} NetPortForwarded: Word = 0; NetPongForwarded: Boolean = False; NetIGDControl: AnsiString; NetIGDService: TURLStr; {$ENDIF} NetPortThread: TThreadID = NilThreadId; NetDumpFile: TStream; function g_Net_Init(): Boolean; procedure g_Net_Cleanup(); procedure g_Net_Free(); procedure g_Net_Flush(); function g_Net_Host(IPAddr: LongWord; Port: enet_uint16; MaxClients: Cardinal = 16): Boolean; procedure g_Net_Host_Die(); procedure g_Net_Host_Send(ID: Integer; Reliable: Boolean; Chan: Byte = NET_CHAN_GAME); function g_Net_Host_Update(): enet_size_t; function g_Net_Connect(IP: string; Port: enet_uint16): Boolean; procedure g_Net_Disconnect(Forced: Boolean = False); procedure g_Net_Client_Send(Reliable: Boolean; Chan: Byte = NET_CHAN_GAME); function g_Net_Client_Update(): enet_size_t; function g_Net_Client_UpdateWhileLoading(): enet_size_t; function g_Net_Client_ByName(Name: string): pTNetClient; function g_Net_Client_ByPlayer(PID: Word): pTNetClient; function g_Net_ClientName_ByID(ID: Integer): string; procedure g_Net_SendData(Data: AByte; peer: pENetPeer; Reliable: Boolean; Chan: Byte = NET_CHAN_DOWNLOAD); function g_Net_Wait_Event(msgId: Word): TMemoryStream; function IpToStr(IP: LongWord): string; function StrToIp(IPstr: string; var IP: LongWord): Boolean; function g_Net_IsHostBanned(IP: LongWord; Perm: Boolean = False): Boolean; procedure g_Net_BanHost(IP: LongWord; Perm: Boolean = True); overload; procedure g_Net_BanHost(IP: string; Perm: Boolean = True); overload; function g_Net_UnbanHost(IP: string): Boolean; overload; function g_Net_UnbanHost(IP: LongWord): Boolean; overload; procedure g_Net_UnbanNonPermHosts(); procedure g_Net_SaveBanList(); procedure g_Net_DumpStart(); procedure g_Net_DumpSendBuffer(); procedure g_Net_DumpRecvBuffer(Buf: penet_uint8; Len: LongWord); procedure g_Net_DumpEnd(); function g_Net_ForwardPorts(ForwardPongPort: Boolean = True): Boolean; procedure g_Net_UnforwardPorts(); implementation uses SysUtils, e_input, g_nethandler, g_netmsg, g_netmaster, g_player, g_window, g_console, g_main, g_game, g_language, g_weapons, utils; { /// SERVICE FUNCTIONS /// } function g_Net_FindSlot(): Integer; var I: Integer; F: Boolean; N, C: Integer; begin N := -1; F := False; C := 0; for I := Low(NetClients) to High(NetClients) do begin if NetClients[I].Used then Inc(C) else if not F then begin F := True; N := I; end; end; if C >= NetMaxClients then begin Result := -1; Exit; end; if not F then begin if (Length(NetClients) >= NetMaxClients) then N := -1 else begin SetLength(NetClients, Length(NetClients) + 1); N := High(NetClients); end; end; if N >= 0 then begin NetClients[N].Used := True; NetClients[N].ID := N; NetClients[N].RequestedFullUpdate := False; NetClients[N].RCONAuth := False; NetClients[N].Voted := False; NetClients[N].Player := 0; end; Result := N; end; function g_Net_Init(): Boolean; var F: TextFile; IPstr: string; IP: LongWord; begin NetIn.Clear(); NetOut.Clear(); SetLength(NetClients, 0); NetPeer := nil; NetHost := nil; NetMyID := -1; NetPlrUID1 := -1; NetPlrUID2 := -1; NetAddr.port := 25666; SetLength(NetBannedHosts, 0); if FileExists(DataDir + BANLIST_FILENAME) then begin Assign(F, DataDir + BANLIST_FILENAME); Reset(F); while not EOF(F) do begin Readln(F, IPstr); if StrToIp(IPstr, IP) then g_Net_BanHost(IP); end; CloseFile(F); g_Net_SaveBanList(); end; Result := (enet_initialize() = 0); end; procedure g_Net_Flush(); begin enet_host_flush(NetHost); end; procedure g_Net_Cleanup(); begin NetIn.Clear(); NetOut.Clear(); SetLength(NetClients, 0); NetClientCount := 0; NetPeer := nil; NetHost := nil; NetMPeer := nil; NetMHost := nil; NetMyID := -1; NetPlrUID1 := -1; NetPlrUID2 := -1; NetState := NET_STATE_NONE; NetPongSock := ENET_SOCKET_NULL; NetTimeToMaster := 0; NetTimeToUpdate := 0; NetTimeToReliable := 0; NetMode := NET_NONE; if NetPortThread <> NilThreadId then WaitForThreadTerminate(NetPortThread, 66666); NetPortThread := NilThreadId; g_Net_UnforwardPorts(); if NetDump then g_Net_DumpEnd(); end; procedure g_Net_Free(); begin g_Net_Cleanup(); enet_deinitialize(); NetInitDone := False; end; { /// SERVER FUNCTIONS /// } function ForwardThread(Param: Pointer): PtrInt; begin Result := 0; if not g_Net_ForwardPorts() then Result := -1; end; function g_Net_Host(IPAddr: LongWord; Port: enet_uint16; MaxClients: Cardinal = 16): Boolean; begin if NetMode <> NET_NONE then begin g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_INGAME]); Result := False; Exit; end; Result := True; g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST], [Port])); if not NetInitDone then begin if (not g_Net_Init()) then begin g_Console_Add(_lc[I_NET_MSG_FERROR] + _lc[I_NET_ERR_ENET]); Result := False; Exit; end else NetInitDone := True; end; NetAddr.host := IPAddr; NetAddr.port := Port; if NetForwardPorts then NetPortThread := BeginThread(ForwardThread); NetHost := enet_host_create(@NetAddr, NET_MAXCLIENTS, NET_CHANS, 0, 0); if (NetHost = nil) then begin g_Console_Add(_lc[I_NET_MSG_ERROR] + Format(_lc[I_NET_ERR_HOST], [Port])); Result := False; g_Net_Cleanup; Exit; end; NetPongSock := enet_socket_create(ENET_SOCKET_TYPE_DATAGRAM); if NetPongSock <> ENET_SOCKET_NULL then begin NetPongAddr.host := IPAddr; NetPongAddr.port := NET_PING_PORT; if enet_socket_bind(NetPongSock, @NetPongAddr) < 0 then begin enet_socket_destroy(NetPongSock); NetPongSock := ENET_SOCKET_NULL; end else enet_socket_set_option(NetPongSock, ENET_SOCKOPT_NONBLOCK, 1); end; NetMode := NET_SERVER; NetOut.Clear(); if NetDump then g_Net_DumpStart(); end; procedure g_Net_Host_Die(); var I: Integer; begin if NetMode <> NET_SERVER then Exit; g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_DISCALL]); for I := 0 to High(NetClients) do if NetClients[I].Used then enet_peer_disconnect(NetClients[I].Peer, NET_DISC_DOWN); while enet_host_service(NetHost, @NetEvent, 1000) > 0 do if NetEvent.kind = ENET_EVENT_TYPE_RECEIVE then enet_packet_destroy(NetEvent.packet); for I := 0 to High(NetClients) do if NetClients[I].Used then begin FreeMemory(NetClients[I].Peer^.data); NetClients[I].Peer^.data := nil; enet_peer_reset(NetClients[I].Peer); NetClients[I].Peer := nil; NetClients[I].Used := False; end; if (NetMPeer <> nil) and (NetMHost <> nil) then g_Net_Slist_Disconnect; if NetPongSock <> ENET_SOCKET_NULL then enet_socket_destroy(NetPongSock); g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_DIE]); enet_host_destroy(NetHost); NetMode := NET_NONE; g_Net_Cleanup; e_WriteLog('NET: Server stopped', TMsgType.Notify); end; procedure g_Net_Host_Send(ID: Integer; Reliable: Boolean; Chan: Byte = NET_CHAN_GAME); var P: pENetPacket; F: enet_uint32; begin if (Reliable) then F := LongWord(ENET_PACKET_FLAG_RELIABLE) else F := 0; if (ID >= 0) then begin if ID > High(NetClients) then Exit; if NetClients[ID].Peer = nil then Exit; P := enet_packet_create(NetOut.Data, NetOut.CurSize, F); if not Assigned(P) then Exit; enet_peer_send(NetClients[ID].Peer, Chan, P); end else begin P := enet_packet_create(NetOut.Data, NetOut.CurSize, F); if not Assigned(P) then Exit; enet_host_broadcast(NetHost, Chan, P); end; if NetDump then g_Net_DumpSendBuffer(); g_Net_Flush(); NetOut.Clear(); end; procedure g_Net_Host_CheckPings(); var ClAddr: ENetAddress; Buf: ENetBuffer; Len: Integer; ClTime: Int64; Ping: array [0..9] of Byte; NPl: Byte; begin if NetPongSock = ENET_SOCKET_NULL then Exit; Buf.data := Addr(Ping[0]); Buf.dataLength := 2+8; Ping[0] := 0; Len := enet_socket_receive(NetPongSock, @ClAddr, @Buf, 1); if Len < 0 then Exit; if (Ping[0] = Ord('D')) and (Ping[1] = Ord('F')) then begin ClTime := Int64(Addr(Ping[2])^); NetOut.Clear(); NetOut.Write(Byte(Ord('D'))); NetOut.Write(Byte(Ord('F'))); NetOut.Write(NetPort); NetOut.Write(ClTime); g_Net_Slist_WriteInfo(); NPl := 0; if gPlayer1 <> nil then Inc(NPl); if gPlayer2 <> nil then Inc(NPl); NetOut.Write(NPl); NetOut.Write(gNumBots); Buf.data := NetOut.Data; Buf.dataLength := NetOut.CurSize; enet_socket_send(NetPongSock, @ClAddr, @Buf, 1); NetOut.Clear(); end; end; function g_Net_Host_Update(): enet_size_t; var IP: string; Port: Word; ID: Integer; TC: pTNetClient; TP: TPlayer; begin IP := ''; Result := 0; if NetUseMaster then g_Net_Slist_Check; g_Net_Host_CheckPings; while (enet_host_service(NetHost, @NetEvent, 0) > 0) do begin case (NetEvent.kind) of ENET_EVENT_TYPE_CONNECT: begin IP := IpToStr(NetEvent.Peer^.address.host); Port := NetEvent.Peer^.address.port; g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST_CONN], [IP, Port])); if (NetEvent.data <> NET_PROTOCOL_VER) then begin g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_REJECT] + _lc[I_NET_DISC_PROTOCOL]); NetEvent.peer^.data := GetMemory(SizeOf(Byte)); Byte(NetEvent.peer^.data^) := 255; enet_peer_disconnect(NetEvent.peer, NET_DISC_PROTOCOL); enet_host_flush(NetHost); Exit; end; ID := g_Net_FindSlot(); if ID < 0 then begin g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_HOST_REJECT] + _lc[I_NET_DISC_FULL]); NetEvent.Peer^.data := GetMemory(SizeOf(Byte)); Byte(NetEvent.peer^.data^) := 255; enet_peer_disconnect(NetEvent.peer, NET_DISC_FULL); enet_host_flush(NetHost); Exit; end; NetClients[ID].Peer := NetEvent.peer; NetClients[ID].Peer^.data := GetMemory(SizeOf(Byte)); Byte(NetClients[ID].Peer^.data^) := ID; NetClients[ID].State := NET_STATE_AUTH; NetClients[ID].RCONAuth := False; enet_peer_timeout(NetEvent.peer, ENET_PEER_TIMEOUT_LIMIT * 2, ENET_PEER_TIMEOUT_MINIMUM * 2, ENET_PEER_TIMEOUT_MAXIMUM * 2); Inc(NetClientCount); g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST_ADD], [ID])); end; ENET_EVENT_TYPE_RECEIVE: begin ID := Byte(NetEvent.peer^.data^); if ID > High(NetClients) then Exit; TC := @NetClients[ID]; if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength); g_Net_HostMsgHandler(TC, NetEvent.packet); end; ENET_EVENT_TYPE_DISCONNECT: begin ID := Byte(NetEvent.peer^.data^); if ID > High(NetClients) then Exit; TC := @NetClients[ID]; if TC = nil then Exit; if not (TC^.Used) then Exit; TP := g_Player_Get(TC^.Player); if TP <> nil then begin TP.Lives := 0; TP.Kill(K_SIMPLEKILL, 0, HIT_DISCON); g_Console_Add(Format(_lc[I_PLAYER_LEAVE], [TP.Name]), True); e_WriteLog('NET: Client ' + TP.Name + ' [' + IntToStr(ID) + '] disconnected.', TMsgType.Notify); g_Player_Remove(TP.UID); end; TC^.Used := False; TC^.State := NET_STATE_NONE; TC^.Peer := nil; TC^.Player := 0; TC^.RequestedFullUpdate := False; FreeMemory(NetEvent.peer^.data); NetEvent.peer^.data := nil; g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_HOST_DISC], [ID])); Dec(NetClientCount); if NetUseMaster then g_Net_Slist_Update; end; end; end; end; { /// CLIENT FUNCTIONS /// } procedure g_Net_Disconnect(Forced: Boolean = False); begin if NetMode <> NET_CLIENT then Exit; if (NetHost = nil) or (NetPeer = nil) then Exit; if not Forced then begin enet_peer_disconnect(NetPeer, NET_DISC_NONE); while (enet_host_service(NetHost, @NetEvent, 1500) > 0) do begin if (NetEvent.kind = ENET_EVENT_TYPE_DISCONNECT) then begin NetPeer := nil; break; end; if (NetEvent.kind = ENET_EVENT_TYPE_RECEIVE) then enet_packet_destroy(NetEvent.packet); end; if NetPeer <> nil then begin enet_peer_reset(NetPeer); NetPeer := nil; end; end else begin e_WriteLog('NET: Kicked from server: ' + IntToStr(NetEvent.data), TMsgType.Notify); if (NetEvent.data <= NET_DISC_MAX) then g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_KICK] + _lc[TStrings_Locale(Cardinal(I_NET_DISC_NONE) + NetEvent.data)], True); end; if NetHost <> nil then begin enet_host_destroy(NetHost); NetHost := nil; end; g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_CLIENT_DISC]); g_Net_Cleanup; e_WriteLog('NET: Disconnected', TMsgType.Notify); end; procedure g_Net_Client_Send(Reliable: Boolean; Chan: Byte = NET_CHAN_GAME); var P: pENetPacket; F: enet_uint32; begin if (Reliable) then F := LongWord(ENET_PACKET_FLAG_RELIABLE) else F := 0; P := enet_packet_create(NetOut.Data, NetOut.CurSize, F); if not Assigned(P) then Exit; enet_peer_send(NetPeer, Chan, P); if NetDump then g_Net_DumpSendBuffer(); g_Net_Flush(); NetOut.Clear(); end; function g_Net_Client_Update(): enet_size_t; begin Result := 0; while (enet_host_service(NetHost, @NetEvent, 0) > 0) do begin case NetEvent.kind of ENET_EVENT_TYPE_RECEIVE: begin if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength); g_Net_ClientMsgHandler(NetEvent.packet); end; ENET_EVENT_TYPE_DISCONNECT: begin g_Net_Disconnect(True); Result := 1; Exit; end; end; end end; function g_Net_Client_UpdateWhileLoading(): enet_size_t; begin Result := 0; while (enet_host_service(NetHost, @NetEvent, 0) > 0) do begin case NetEvent.kind of ENET_EVENT_TYPE_RECEIVE: begin if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength); g_Net_ClientLightMsgHandler(NetEvent.packet); end; ENET_EVENT_TYPE_DISCONNECT: begin g_Net_Disconnect(True); Result := 1; Exit; end; end; end; g_Net_Flush(); end; function g_Net_Connect(IP: string; Port: enet_uint16): Boolean; var OuterLoop: Boolean; begin if NetMode <> NET_NONE then begin g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_ERR_INGAME], True); Result := False; Exit; end; Result := True; g_Console_Add(_lc[I_NET_MSG] + Format(_lc[I_NET_MSG_CLIENT_CONN], [IP, Port])); if not NetInitDone then begin if (not g_Net_Init()) then begin g_Console_Add(_lc[I_NET_MSG_FERROR] + _lc[I_NET_ERR_ENET], True); Result := False; Exit; end else NetInitDone := True; end; NetHost := enet_host_create(nil, 1, NET_CHANS, 0, 0); if (NetHost = nil) then begin g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CLIENT], True); g_Net_Cleanup; Result := False; Exit; end; enet_address_set_host(@NetAddr, PChar(Addr(IP[1]))); NetAddr.port := Port; NetPeer := enet_host_connect(NetHost, @NetAddr, NET_CHANS, NET_PROTOCOL_VER); if (NetPeer = nil) then begin g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CLIENT], True); enet_host_destroy(NetHost); g_Net_Cleanup; Result := False; Exit; end; OuterLoop := True; while OuterLoop do begin while (enet_host_service(NetHost, @NetEvent, 0) > 0) do begin if (NetEvent.kind = ENET_EVENT_TYPE_CONNECT) then begin g_Console_Add(_lc[I_NET_MSG] + _lc[I_NET_MSG_CLIENT_DONE]); NetMode := NET_CLIENT; NetOut.Clear(); enet_peer_timeout(NetPeer, ENET_PEER_TIMEOUT_LIMIT * 2, ENET_PEER_TIMEOUT_MINIMUM * 2, ENET_PEER_TIMEOUT_MAXIMUM * 2); NetClientIP := IP; NetClientPort := Port; if NetDump then g_Net_DumpStart(); Exit; end; end; ProcessLoading(true); if e_KeyPressed(IK_ESCAPE) or e_KeyPressed(IK_SPACE) or e_KeyPressed(VK_ESCAPE) then OuterLoop := False; end; g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_TIMEOUT], True); if NetPeer <> nil then enet_peer_reset(NetPeer); if NetHost <> nil then begin enet_host_destroy(NetHost); NetHost := nil; end; g_Net_Cleanup(); Result := False; end; function IpToStr(IP: LongWord): string; var Ptr: Pointer; begin Ptr := Addr(IP); Result := IntToStr(PByte(Ptr + 0)^) + '.'; Result := Result + IntToStr(PByte(Ptr + 1)^) + '.'; Result := Result + IntToStr(PByte(Ptr + 2)^) + '.'; Result := Result + IntToStr(PByte(Ptr + 3)^); end; function StrToIp(IPstr: string; var IP: LongWord): Boolean; var EAddr: ENetAddress; begin Result := enet_address_set_host(@EAddr, PChar(@IPstr[1])) = 0; IP := EAddr.host; end; function g_Net_Client_ByName(Name: string): pTNetClient; var a: Integer; pl: TPlayer; begin Result := nil; for a := Low(NetClients) to High(NetClients) do if (NetClients[a].Used) and (NetClients[a].State = NET_STATE_GAME) then begin pl := g_Player_Get(NetClients[a].Player); if pl = nil then continue; if Copy(LowerCase(pl.Name), 1, Length(Name)) <> LowerCase(Name) then continue; if NetClients[a].Peer <> nil then begin Result := @NetClients[a]; Exit; end; end; end; function g_Net_Client_ByPlayer(PID: Word): pTNetClient; var a: Integer; begin Result := nil; for a := Low(NetClients) to High(NetClients) do if (NetClients[a].Used) and (NetClients[a].State = NET_STATE_GAME) then if NetClients[a].Player = PID then begin Result := @NetClients[a]; Exit; end; end; function g_Net_ClientName_ByID(ID: Integer): string; var a: Integer; pl: TPlayer; begin Result := ''; if ID = NET_EVERYONE then Exit; for a := Low(NetClients) to High(NetClients) do if (NetClients[a].ID = ID) and (NetClients[a].Used) and (NetClients[a].State = NET_STATE_GAME) then begin pl := g_Player_Get(NetClients[a].Player); if pl = nil then Exit; Result := pl.Name; end; end; procedure g_Net_SendData(Data: AByte; peer: pENetPeer; Reliable: Boolean; Chan: Byte = NET_CHAN_DOWNLOAD); var P: pENetPacket; F: enet_uint32; dataLength: Cardinal; begin dataLength := Length(Data); if (Reliable) then F := LongWord(ENET_PACKET_FLAG_RELIABLE) else F := 0; if (peer <> nil) then begin P := enet_packet_create(@Data[0], dataLength, F); if not Assigned(P) then Exit; enet_peer_send(peer, Chan, P); end else begin P := enet_packet_create(@Data[0], dataLength, F); if not Assigned(P) then Exit; enet_host_broadcast(NetHost, Chan, P); end; enet_host_flush(NetHost); end; function g_Net_Wait_Event(msgId: Word): TMemoryStream; var downloadEvent: ENetEvent; OuterLoop: Boolean; MID: Byte; Ptr: Pointer; msgStream: TMemoryStream; begin FillChar(downloadEvent, SizeOf(downloadEvent), 0); msgStream := nil; OuterLoop := True; while OuterLoop do begin while (enet_host_service(NetHost, @downloadEvent, 0) > 0) do begin if (downloadEvent.kind = ENET_EVENT_TYPE_RECEIVE) then begin Ptr := downloadEvent.packet^.data; MID := Byte(Ptr^); if (MID = msgId) then begin msgStream := TMemoryStream.Create; msgStream.SetSize(downloadEvent.packet^.dataLength); msgStream.WriteBuffer(Ptr^, downloadEvent.packet^.dataLength); msgStream.Seek(0, soFromBeginning); OuterLoop := False; enet_packet_destroy(downloadEvent.packet); break; end else begin enet_packet_destroy(downloadEvent.packet); end; end else if (downloadEvent.kind = ENET_EVENT_TYPE_DISCONNECT) then begin if (downloadEvent.data <= NET_DISC_MAX) then g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' ' + _lc[TStrings_Locale(Cardinal(I_NET_DISC_NONE) + downloadEvent.data)], True); OuterLoop := False; Break; end; end; ProcessLoading(true); if e_KeyPressed(IK_ESCAPE) or e_KeyPressed(IK_SPACE) or e_KeyPressed(VK_ESCAPE) then break; end; Result := msgStream; end; function g_Net_IsHostBanned(IP: LongWord; Perm: Boolean = False): Boolean; var I: Integer; begin Result := False; if NetBannedHosts = nil then Exit; for I := 0 to High(NetBannedHosts) do if (NetBannedHosts[I].IP = IP) and ((not Perm) or (NetBannedHosts[I].Perm)) then begin Result := True; break; end; end; procedure g_Net_BanHost(IP: LongWord; Perm: Boolean = True); overload; var I, P: Integer; begin if IP = 0 then Exit; if g_Net_IsHostBanned(IP, Perm) then Exit; P := -1; for I := Low(NetBannedHosts) to High(NetBannedHosts) do if NetBannedHosts[I].IP = 0 then begin P := I; break; end; if P < 0 then begin SetLength(NetBannedHosts, Length(NetBannedHosts) + 1); P := High(NetBannedHosts); end; NetBannedHosts[P].IP := IP; NetBannedHosts[P].Perm := Perm; end; procedure g_Net_BanHost(IP: string; Perm: Boolean = True); overload; var a: LongWord; b: Boolean; begin b := StrToIp(IP, a); if b then g_Net_BanHost(a, Perm); end; procedure g_Net_UnbanNonPermHosts(); var I: Integer; begin if NetBannedHosts = nil then Exit; for I := Low(NetBannedHosts) to High(NetBannedHosts) do if (NetBannedHosts[I].IP > 0) and not NetBannedHosts[I].Perm then begin NetBannedHosts[I].IP := 0; NetBannedHosts[I].Perm := True; end; end; function g_Net_UnbanHost(IP: string): Boolean; overload; var a: LongWord; begin Result := StrToIp(IP, a); if Result then Result := g_Net_UnbanHost(a); end; function g_Net_UnbanHost(IP: LongWord): Boolean; overload; var I: Integer; begin Result := False; if IP = 0 then Exit; if NetBannedHosts = nil then Exit; for I := 0 to High(NetBannedHosts) do if NetBannedHosts[I].IP = IP then begin NetBannedHosts[I].IP := 0; NetBannedHosts[I].Perm := True; Result := True; // no break here to clear all bans of this host, perm and non-perm end; end; procedure g_Net_SaveBanList(); var F: TextFile; I: Integer; begin Assign(F, DataDir + BANLIST_FILENAME); Rewrite(F); if NetBannedHosts <> nil then for I := 0 to High(NetBannedHosts) do if NetBannedHosts[I].Perm and (NetBannedHosts[I].IP > 0) then Writeln(F, IpToStr(NetBannedHosts[I].IP)); CloseFile(F); end; procedure g_Net_DumpStart(); begin if NetMode = NET_SERVER then NetDumpFile := createDiskFile(NETDUMP_FILENAME + '_server') else NetDumpFile := createDiskFile(NETDUMP_FILENAME + '_client'); end; procedure g_Net_DumpSendBuffer(); begin writeInt(NetDumpFile, gTime); writeInt(NetDumpFile, LongWord(NetOut.CurSize)); writeInt(NetDumpFile, Byte(1)); NetDumpFile.WriteBuffer(NetOut.Data^, NetOut.CurSize); end; procedure g_Net_DumpRecvBuffer(Buf: penet_uint8; Len: LongWord); begin if (Buf = nil) or (Len = 0) then Exit; writeInt(NetDumpFile, gTime); writeInt(NetDumpFile, Len); writeInt(NetDumpFile, Byte(0)); NetDumpFile.WriteBuffer(Buf^, Len); end; procedure g_Net_DumpEnd(); begin NetDumpFile.Free(); NetDumpFile := nil; end; function g_Net_ForwardPorts(ForwardPongPort: Boolean = True): Boolean; {$IFDEF USE_MINIUPNPC} var DevList: PUPNPDev; Urls: TUPNPUrls; Data: TIGDDatas; LanAddr: array [0..255] of Char; StrPort: AnsiString; Err, I: Integer; begin Result := False; if NetPortForwarded = NetPort then begin Result := True; exit; end; NetPongForwarded := False; NetPortForwarded := 0; DevList := upnpDiscover(1000, nil, nil, 0, 0, 2, Addr(Err)); if DevList = nil then begin conwritefln('port forwarding failed: upnpDiscover() failed: %d', [Err]); exit; end; I := UPNP_GetValidIGD(DevList, @Urls, @Data, Addr(LanAddr[0]), 256); if I = 0 then begin conwriteln('port forwarding failed: could not find an IGD device on this LAN'); FreeUPNPDevList(DevList); FreeUPNPUrls(@Urls); exit; end; StrPort := IntToStr(NetPort); I := UPNP_AddPortMapping( Urls.controlURL, Addr(data.first.servicetype[1]), PChar(StrPort), PChar(StrPort), Addr(LanAddr[0]), PChar('D2DF'), PChar('UDP'), nil, PChar('0') ); if I <> 0 then begin conwritefln('forwarding port %d failed: error %d', [NetPort, I]); FreeUPNPDevList(DevList); FreeUPNPUrls(@Urls); exit; end; if ForwardPongPort then begin StrPort := IntToStr(NET_PING_PORT); I := UPNP_AddPortMapping( Urls.controlURL, Addr(data.first.servicetype[1]), PChar(StrPort), PChar(StrPort), Addr(LanAddr[0]), PChar('D2DF'), PChar('UDP'), nil, PChar('0') ); if I <> 0 then begin conwritefln('forwarding port %d failed: error %d', [NetPort + 1, I]); NetPongForwarded := False; end else begin conwritefln('forwarded port %d successfully', [NetPort + 1]); NetPongForwarded := True; end; end; conwritefln('forwarded port %d successfully', [NetPort]); NetIGDControl := AnsiString(Urls.controlURL); NetIGDService := data.first.servicetype; NetPortForwarded := NetPort; FreeUPNPDevList(DevList); FreeUPNPUrls(@Urls); Result := True; end; {$ELSE} begin Result := False; end; {$ENDIF} procedure g_Net_UnforwardPorts(); {$IFDEF USE_MINIUPNPC} var I: Integer; StrPort: AnsiString; begin if NetPortForwarded = 0 then Exit; conwriteln('unforwarding ports...'); StrPort := IntToStr(NetPortForwarded); I := UPNP_DeletePortMapping( PChar(NetIGDControl), Addr(NetIGDService[1]), PChar(StrPort), PChar('UDP'), nil ); conwritefln(' port %d: %d', [NetPortForwarded, I]); if NetPongForwarded then begin NetPongForwarded := False; StrPort := IntToStr(NetPortForwarded + 1); I := UPNP_DeletePortMapping( PChar(NetIGDControl), Addr(NetIGDService[1]), PChar(StrPort), PChar('UDP'), nil ); conwritefln(' port %d: %d', [NetPortForwarded + 1, I]); end; NetPortForwarded := 0; end; {$ELSE} begin end; {$ENDIF} initialization NetIn.Alloc(NET_BUFSIZE); NetOut.Alloc(NET_BUFSIZE); finalization NetIn.Free(); NetOut.Free(); end.