X-Git-Url: http://deadsoftware.ru/gitweb?p=d2df-sdl.git;a=blobdiff_plain;f=src%2Fgame%2Fg_net.pas;h=60d91c110a118bfe840059d4ffd01035a84ee95c;hp=dc3671261ad05f0fe27ee815ca47684f5a3e3a74;hb=8f5d5b700022732e21511affb218f8179344c90e;hpb=565edf25d031dba9a1d6436e6b758a22c8329b45 diff --git a/src/game/g_net.pas b/src/game/g_net.pas index dc36712..60d91c1 100644 --- a/src/game/g_net.pas +++ b/src/game/g_net.pas @@ -18,13 +18,13 @@ unit g_net; interface uses - e_log, e_msg, ENet, Classes, MAPDEF{$IFDEF USE_MINIUPNPC}, miniupnpc;{$ELSE};{$ENDIF} + e_log, e_msg, ENet, Classes, md5, MAPDEF{$IFDEF USE_MINIUPNPC}, miniupnpc;{$ELSE};{$ENDIF} const NET_PROTOCOL_VER = 181; NET_MAXCLIENTS = 24; - NET_CHANS = 11; + NET_CHANS = 12; NET_CHAN_SERVICE = 0; NET_CHAN_IMPORTANT = 1; @@ -37,6 +37,7 @@ const NET_CHAN_CHAT = 8; NET_CHAN_DOWNLOAD = 9; NET_CHAN_SHOTS = 10; + NET_CHAN_DOWNLOAD_EX = 11; NET_NONE = 0; NET_SERVER = 1; @@ -60,6 +61,7 @@ const NET_DISC_TEMPBAN: enet_uint32 = 7; NET_DISC_BAN: enet_uint32 = 8; NET_DISC_MAX: enet_uint32 = 8; + NET_DISC_FILE_TIMEOUT: enet_uint32 = 13; NET_STATE_NONE = 0; NET_STATE_AUTH = 1; @@ -77,6 +79,19 @@ const {$ENDIF} type + TNetFileTransfer = record + diskName: string; + hash: TMD5Digest; + stream: TStream; + size: Integer; // file size in bytes + chunkSize: Integer; + lastSentChunk: Integer; + lastAckChunk: Integer; + lastAckTime: Int64; // msecs; if not "in progress", we're waiting for the first ack + inProgress: Boolean; + diskBuffer: PChar; // of `chunkSize` bytes + end; + TNetClient = record ID: Byte; Used: Boolean; @@ -86,6 +101,7 @@ type RequestedFullUpdate: Boolean; RCONAuth: Boolean; Voted: Boolean; + Transfer: TNetFileTransfer; // only one transfer may be active NetOut: array [0..1] of TMsg; end; TBanRecord = record @@ -186,7 +202,8 @@ 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 g_Net_Wait_Event(msgId: Word): TMemoryStream; +//function g_Net_Wait_FileInfo (var tf: TNetFileTransfer; asMap: Boolean; out resList: TStringList): Integer; function IpToStr(IP: LongWord): string; function StrToIp(IPstr: string; var IP: LongWord): Boolean; @@ -207,18 +224,53 @@ procedure g_Net_DumpEnd(); function g_Net_ForwardPorts(ForwardPongPort: Boolean = True): Boolean; procedure g_Net_UnforwardPorts(); +function g_Net_UserRequestExit: Boolean; + +function g_Net_SendMapRequest (): Boolean; +function g_Net_Wait_MapInfo (var tf: TNetFileTransfer; resList: TStringList): Integer; +function g_Net_RequestResFileInfo (resIndex: LongInt; out tf: TNetFileTransfer): Integer; +function g_Net_AbortResTransfer (var tf: TNetFileTransfer): Boolean; +function g_Net_ReceiveResourceFile (resIndex: LongInt; var tf: TNetFileTransfer; strm: TStream): Integer; + + 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, ctypes; + g_main, g_game, g_language, g_weapons, utils, ctypes, + g_map; + +const + FILE_CHUNK_SIZE = 8192; var g_Net_DownloadTimeout: Single; { /// SERVICE FUNCTIONS /// } +procedure clearNetClientTransfers (var nc: TNetClient); +begin + nc.Transfer.stream.Free; + nc.Transfer.diskName := ''; // just in case + if (nc.Transfer.diskBuffer <> nil) then FreeMem(nc.Transfer.diskBuffer); + nc.Transfer.stream := nil; + nc.Transfer.diskBuffer := nil; +end; + + +procedure clearNetClient (var nc: TNetClient); +begin + clearNetClientTransfers(nc); +end; + +procedure clearNetClients (clearArray: Boolean); +var + f: Integer; +begin + for f := Low(NetClients) to High(NetClients) do clearNetClient(NetClients[f]); + if (clearArray) then SetLength(NetClients, 0); +end; function g_Net_FindSlot(): Integer; @@ -266,6 +318,7 @@ begin NetClients[N].RCONAuth := False; NetClients[N].Voted := False; NetClients[N].Player := 0; + clearNetClientTransfers(NetClients[N]); // just in case end; Result := N; @@ -281,7 +334,8 @@ begin NetOut.Clear(); NetBuf[NET_UNRELIABLE].Clear(); NetBuf[NET_RELIABLE].Clear(); - SetLength(NetClients, 0); + //SetLength(NetClients, 0); + clearNetClients(true); // clear array NetPeer := nil; NetHost := nil; NetMyID := -1; @@ -364,7 +418,8 @@ begin NetBuf[NET_UNRELIABLE].Clear(); NetBuf[NET_RELIABLE].Clear(); - SetLength(NetClients, 0); + //SetLength(NetClients, 0); + clearNetClients(true); // clear array NetClientCount := 0; NetPeer := nil; @@ -501,6 +556,7 @@ begin NetClients[I].NetOut[NET_RELIABLE].Free(); end; + clearNetClients(false); // don't clear array if (NetMPeer <> nil) and (NetMHost <> nil) then g_Net_Slist_Disconnect; if NetPongSock <> ENET_SOCKET_NULL then enet_socket_destroy(NetPongSock); @@ -586,6 +642,368 @@ begin end; end; + +const + // server packet type + NTF_SERVER_DONE = 10; // done with this file + NTF_SERVER_FILE_INFO = 11; // sent after client request + NTF_SERVER_CHUNK = 12; // next chunk; chunk number follows + NTF_SERVER_ABORT = 13; // server abort + NTF_SERVER_MAP_INFO = 14; + + // client packet type + NTF_CLIENT_MAP_REQUEST = 100; // map file request; also, returns list of additional wads to download + NTF_CLIENT_FILE_REQUEST = 101; // resource file request (by index) + NTF_CLIENT_ABORT = 102; // do not send requested file, or abort current transfer + NTF_CLIENT_START = 103; // start transfer; client may resume download by sending non-zero starting chunk + NTF_CLIENT_ACK = 104; // chunk ack; chunk number follows + + +procedure KillClientByFT (var nc: TNetClient); +begin + e_LogWritefln('disconnected client #%d due to file transfer error', [nc.ID], TMsgType.Warning); + enet_peer_disconnect(nc.Peer, NET_DISC_FILE_TIMEOUT); + clearNetClientTransfers(nc); +end; + + +procedure ProcessHostFileTransfers (var nc: TNetClient); +var + tf: ^TNetFileTransfer; + ct: Int64; + chunks: Integer; + rd: Integer; + pkt: PENetPacket; + omsg: TMsg; +begin + tf := @nc.Transfer; + if (tf.stream = nil) then exit;; + ct := GetTimerMS(); + // arbitrary timeout number + if (ct-tf.lastAckTime >= 5000) then + begin + KillClientByFT(nc); + exit; + end; + // check if we need to send something + if (not tf.inProgress) then exit; // waiting for the initial ack + // ok, we're sending chunks + if (tf.lastAckChunk <> tf.lastSentChunk) then exit; + Inc(tf.lastSentChunk); + // do it one chunk at a time; client ack will advance our chunk counter + chunks := (tf.size+tf.chunkSize-1) div tf.chunkSize; + + if (tf.lastSentChunk > chunks) then + begin + KillClientByFT(nc); + exit; + end; + + omsg.Alloc(NET_BUFSIZE); + try + omsg.Clear(); + if (tf.lastSentChunk = chunks) then + begin + // we're done with this file + e_LogWritefln('download: client #%d, DONE sending chunks #%d/#%d', [nc.ID, tf.lastSentChunk, chunks]); + omsg.Write(Byte(NTF_SERVER_DONE)); + clearNetClientTransfers(nc); + end + else + begin + // packet type + omsg.Write(Byte(NTF_SERVER_CHUNK)); + omsg.Write(LongInt(tf.lastSentChunk)); + // read chunk + rd := tf.size-(tf.lastSentChunk*tf.chunkSize); + if (rd > tf.chunkSize) then rd := tf.chunkSize; + omsg.Write(LongInt(rd)); + e_LogWritefln('download: client #%d, sending chunk #%d/#%d (%d bytes)', [nc.ID, tf.lastSentChunk, chunks, rd]); + //FIXME: check for errors here + try + tf.stream.Seek(tf.lastSentChunk*tf.chunkSize, soFromBeginning); + tf.stream.ReadBuffer(tf.diskBuffer^, rd); + omsg.WriteData(tf.diskBuffer, rd); + except // sorry + KillClientByFT(nc); + exit; + end; + end; + // send packet + pkt := enet_packet_create(omsg.Data, omsg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then + begin + KillClientByFT(nc); + exit; + end; + if (enet_peer_send(nc.Peer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then + begin + KillClientByFT(nc); + exit; + end; + finally + omsg.Free(); + end; +end; + + +// received packet is in `NetEvent` +procedure ProcessDownloadExPacket (); +var + f: Integer; + nc: ^TNetClient; + nid: Integer = -1; + msg: TMsg; + omsg: TMsg; + cmd: Byte; + tf: ^TNetFileTransfer; + fname: string; + pkt: PENetPacket; + chunk: Integer; + ridx: Integer; + dfn: AnsiString; + md5: TMD5Digest; + st: TStream; + size: LongInt; +begin + // find client index by peer + for f := Low(NetClients) to High(NetClients) do + begin + if (not NetClients[f].Used) then continue; + //if (NetClients[f].Transfer.stream = nil) then continue; + if (NetClients[f].Peer = NetEvent.peer) then + begin + nid := f; + break; + end; + end; + e_LogWritefln('RECEIVE: dlpacket; client=%d (datalen=%u)', [nid, NetEvent.packet^.dataLength]); + + if (nid < 0) then exit; // wtf?! + nc := @NetClients[nid]; + + if (NetEvent.packet^.dataLength = 0) then + begin + KillClientByFT(nc^); + exit; + end; + + tf := @NetClients[nid].Transfer; + tf.lastAckTime := GetTimerMS(); + + cmd := Byte(NetEvent.packet^.data^); + e_LogWritefln('RECEIVE: nid=%d; cmd=%u', [nid, cmd]); + case cmd of + NTF_CLIENT_FILE_REQUEST: // file request + begin + if (tf.stream <> nil) then + begin + KillClientByFT(nc^); + exit; + end; + if (NetEvent.packet^.dataLength < 2) then + begin + KillClientByFT(nc^); + exit; + end; + // new transfer request; build packet + if not msg.Init(NetEvent.packet^.data+1, NetEvent.packet^.dataLength-1, True) then + begin + KillClientByFT(nc^); + exit; + end; + // get resource index + ridx := msg.ReadLongInt(); + if (ridx < -1) or (ridx >= gExternalResources.Count) then + begin + e_LogWritefln('Invalid resource index %d', [ridx], TMsgType.Warning); + KillClientByFT(nc^); + exit; + end; + if (ridx < 0) then fname := MapsDir+gGameSettings.WAD else fname := gExternalResources[ridx]; + if (length(fname) = 0) then + begin + e_WriteLog('Invalid filename: '+fname, TMsgType.Warning); + KillClientByFT(nc^); + exit; + end; + tf.diskName := findDiskWad(fname); + if (length(tf.diskName) = 0) then tf.diskName := findDiskWad(GameDir+'/wads/'+fname); + if (length(tf.diskName) = 0) then + begin + e_LogWritefln('NETWORK: file "%s" not found!', [fname], TMsgType.Fatal); + KillClientByFT(nc^); + exit; + end; + // calculate hash + //TODO: cache hashes + tf.hash := MD5File(tf.diskName); + // create file stream + tf.diskName := findDiskWad(fname); + try + tf.stream := openDiskFileRO(tf.diskName); + except + tf.stream := nil; + end; + if (tf.stream = nil) then + begin + e_WriteLog(Format('NETWORK: file "%s" not found!', [fname]), TMsgType.Fatal); + KillClientByFT(nc^); + exit; + end; + e_LogWritefln('client #%d requested resource #%d (file is `%s` : `%s`)', [nc.ID, ridx, fname, tf.diskName]); + tf.size := tf.stream.size; + tf.chunkSize := FILE_CHUNK_SIZE; // arbitrary + tf.lastSentChunk := -1; + tf.lastAckChunk := -1; + tf.lastAckTime := GetTimerMS(); + tf.inProgress := False; // waiting for the first ACK or for the cancel + GetMem(tf.diskBuffer, tf.chunkSize); + // sent file info message + omsg.Alloc(NET_BUFSIZE); + try + omsg.Clear(); + omsg.Write(Byte(NTF_SERVER_FILE_INFO)); + omsg.Write(tf.hash); + omsg.Write(tf.size); + omsg.Write(tf.chunkSize); + omsg.Write(ExtractFileName(fname)); + pkt := enet_packet_create(omsg.Data, omsg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then + begin + KillClientByFT(nc^); + exit; + end; + if (enet_peer_send(nc.Peer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then + begin + KillClientByFT(nc^); + exit; + end; + finally + omsg.Free(); + end; + end; + NTF_CLIENT_ABORT: // do not send requested file, or abort current transfer + begin + e_LogWritefln('client #%d aborted file transfer', [nc.ID]); + clearNetClientTransfers(nc^); + end; + NTF_CLIENT_START: // start transfer; client may resume download by sending non-zero starting chunk + begin + if not Assigned(tf.stream) then + begin + KillClientByFT(nc^); + exit; + end; + if (tf.lastSentChunk <> -1) or (tf.lastAckChunk <> -1) or (tf.inProgress) then + begin + // double ack, get lost + KillClientByFT(nc^); + exit; + end; + if (NetEvent.packet^.dataLength < 2) then + begin + KillClientByFT(nc^); + exit; + end; + // build packet + if not msg.Init(NetEvent.packet^.data+1, NetEvent.packet^.dataLength-1, True) then + begin + KillClientByFT(nc^); + exit; + end; + chunk := msg.ReadLongInt(); + if (chunk < 0) or (chunk > (tf.size+tf.chunkSize-1) div tf.chunkSize) then + begin + KillClientByFT(nc^); + exit; + end; + e_LogWritefln('client #%d started file transfer from chunk %d', [nc.ID, chunk]); + // start sending chunks + tf.inProgress := True; + tf.lastSentChunk := chunk-1; + tf.lastAckChunk := chunk-1; + end; + NTF_CLIENT_ACK: // chunk ack; chunk number follows + begin + if not Assigned(tf.stream) then + begin + KillClientByFT(nc^); + exit; + end; + if (tf.lastSentChunk < 0) or (not tf.inProgress) then + begin + // double ack, get lost + KillClientByFT(nc^); + exit; + end; + if (NetEvent.packet^.dataLength < 2) then + begin + KillClientByFT(nc^); + exit; + end; + // build packet + if not msg.Init(NetEvent.packet^.data+1, NetEvent.packet^.dataLength-1, True) then + begin + KillClientByFT(nc^); + exit; + end; + chunk := msg.ReadLongInt(); + if (chunk < 0) or (chunk > (tf.size+tf.chunkSize-1) div tf.chunkSize) then + begin + KillClientByFT(nc^); + exit; + end; + // do it this way, so client may seek, or request retransfers for some reason + tf.lastAckChunk := chunk; + tf.lastSentChunk := chunk; + e_LogWritefln('client #%d acked file transfer chunk %d', [nc.ID, chunk]); + end; + NTF_CLIENT_MAP_REQUEST: + begin + e_LogWritefln('client #%d requested map info', [nc.ID]); + omsg.Alloc(NET_BUFSIZE); + try + omsg.Clear(); + dfn := findDiskWad(MapsDir+gGameSettings.WAD); + if (dfn = '') then dfn := '!wad_not_found!.wad'; //FIXME + md5 := MD5File(dfn); + st := openDiskFileRO(dfn); + if not assigned(st) then exit; //wtf?! + size := st.size; + st.Free; + // packet type + omsg.Write(Byte(NTF_SERVER_MAP_INFO)); + // map wad name + omsg.Write(gGameSettings.WAD); + // map wad md5 + omsg.Write(md5); + // map wad size + omsg.Write(size); + // number of external resources for map + omsg.Write(LongInt(gExternalResources.Count)); + // external resource names + for f := 0 to gExternalResources.Count-1 do + begin + omsg.Write(ExtractFileName(gExternalResources[f])); // GameDir+'/wads/'+ResList.Strings[i] + end; + // send packet + pkt := enet_packet_create(omsg.Data, omsg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then exit; + if (enet_peer_send(nc.Peer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then exit; + finally + omsg.Free(); + end; + end; + else + begin + KillClientByFT(NetClients[nid]); + exit; + end; + end; +end; + + function g_Net_Host_Update(): enet_size_t; var IP: string; @@ -593,14 +1011,22 @@ var ID: Integer; TC: pTNetClient; TP: TPlayer; + f: Integer; begin IP := ''; Result := 0; - if NetUseMaster then - g_Net_Slist_Check; + if NetUseMaster then g_Net_Slist_Check; g_Net_Host_CheckPings; + // process file transfers + for f := Low(NetClients) to High(NetClients) do + begin + if (not NetClients[f].Used) then continue; + if (NetClients[f].Transfer.stream = nil) then continue; + ProcessHostFileTransfers(NetClients[f]); + end; + while (enet_host_service(NetHost, @NetEvent, 0) > 0) do begin case (NetEvent.kind) of @@ -642,6 +1068,7 @@ begin NetClients[ID].RCONAuth := False; NetClients[ID].NetOut[NET_UNRELIABLE].Alloc(NET_BUFSIZE*2); NetClients[ID].NetOut[NET_RELIABLE].Alloc(NET_BUFSIZE*2); + clearNetClientTransfers(NetClients[ID]); // just in case enet_peer_timeout(NetEvent.peer, ENET_PEER_TIMEOUT_LIMIT * 2, ENET_PEER_TIMEOUT_MINIMUM * 2, ENET_PEER_TIMEOUT_MAXIMUM * 2); @@ -651,18 +1078,27 @@ begin ENET_EVENT_TYPE_RECEIVE: begin - ID := Byte(NetEvent.peer^.data^); - if ID > High(NetClients) then Exit; - TC := @NetClients[ID]; + //e_LogWritefln('RECEIVE: chan=%u', [NetEvent.channelID]); + if (NetEvent.channelID = NET_CHAN_DOWNLOAD_EX) then + begin + ProcessDownloadExPacket(); + end + else + 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_Host_HandlePacket(TC, NetEvent.packet, g_Net_HostMsgHandler); + if NetDump then g_Net_DumpRecvBuffer(NetEvent.packet^.data, NetEvent.packet^.dataLength); + g_Net_Host_HandlePacket(TC, NetEvent.packet, g_Net_HostMsgHandler); + end; end; ENET_EVENT_TYPE_DISCONNECT: begin ID := Byte(NetEvent.peer^.data^); if ID > High(NetClients) then Exit; + clearNetClient(NetClients[ID]); TC := @NetClients[ID]; if TC = nil then Exit; @@ -1011,7 +1447,7 @@ begin enet_host_flush(NetHost); end; -function UserRequestExit: Boolean; +function g_Net_UserRequestExit: Boolean; begin Result := e_KeyPressed(IK_SPACE) or e_KeyPressed(IK_ESCAPE) or @@ -1022,6 +1458,7 @@ begin e_KeyPressed(JOY3_JUMP) end; +{ function g_Net_Wait_Event(msgId: Word): TMemoryStream; var ev: ENetEvent; @@ -1074,9 +1511,558 @@ begin status := 0 (* error: timeout *) end; ProcessLoading(true); - until (status <> 2) or UserRequestExit(); + until (status <> 2) or g_Net_UserRequestExit(); Result := stream end; +} + + +function getNewTimeoutEnd (): Int64; +begin + result := GetTimerMS(); + if (g_Net_DownloadTimeout <= 0) then + begin + result := result+1000*60*3; // 3 minutes + end + else + begin + result := result+trunc(g_Net_DownloadTimeout*1000); + end; +end; + + +function g_Net_SendMapRequest (): Boolean; +var + msg: TMsg; + pkt: PENetPacket; +begin + result := false; + e_LogWritefln('sending map request...', []); + // send request + msg.Alloc(NET_BUFSIZE); + try + msg.Clear(); + msg.Write(Byte(NTF_CLIENT_MAP_REQUEST)); + e_LogWritefln(' request size is %d', [msg.CurSize]); + pkt := enet_packet_create(msg.Data, msg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then exit; + if (enet_peer_send(NetPeer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then exit; + enet_host_flush(NetHost); + finally + msg.Free(); + end; + result := true; +end; + + +// returns `false` on error or user abort +// fills: +// hash +// size +// chunkSize +// returns: +// <0 on error +// 0 on success +// 1 on user abort +// 2 on server abort +// for maps, first `tf.diskName` name will be map wad name, and `tf.hash`/`tf.size` will contain map info +function g_Net_Wait_MapInfo (var tf: TNetFileTransfer; resList: TStringList): Integer; +var + ev: ENetEvent; + rMsgId: Byte; + Ptr: Pointer; + msg: TMsg; + freePacket: Boolean = false; + ct, ett: Int64; + status: cint; + s: AnsiString; + rc, f: LongInt; +begin + FillChar(ev, SizeOf(ev), 0); + Result := -1; + try + ett := getNewTimeoutEnd(); + repeat + status := enet_host_service(NetHost, @ev, 300); + if (status < 0) then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' network error', True); + Result := -1; + exit; + end; + if (status = 0) then + begin + // check for timeout + ct := GetTimerMS(); + if (ct >= ett) then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' timeout reached', True); + Result := -1; + exit; + end; + end + else + begin + // some event + case ev.kind of + ENET_EVENT_TYPE_RECEIVE: + begin + freePacket := true; + if (ev.channelID <> NET_CHAN_DOWNLOAD_EX) then + begin + //e_LogWritefln('g_Net_Wait_MapInfo: skip message from non-transfer channel', []); + end + else + begin + ett := getNewTimeoutEnd(); + if (ev.packet.dataLength < 1) then + begin + e_LogWritefln('g_Net_Wait_MapInfo: invalid server packet (no data)', []); + Result := -1; + exit; + end; + Ptr := ev.packet^.data; + rMsgId := Byte(Ptr^); + e_LogWritefln('g_Net_Wait_MapInfo: got message %u from server (dataLength=%u)', [rMsgId, ev.packet^.dataLength]); + if (rMsgId = NTF_SERVER_FILE_INFO) then + begin + e_LogWritefln('g_Net_Wait_MapInfo: waiting for map info reply, but got file info reply', []); + Result := -1; + exit; + end + else if (rMsgId = NTF_SERVER_ABORT) then + begin + e_LogWritefln('g_Net_Wait_MapInfo: server aborted transfer', []); + Result := 2; + exit; + end + else if (rMsgId = NTF_SERVER_MAP_INFO) then + begin + e_LogWritefln('g_Net_Wait_MapInfo: creating map info packet...', []); + if not msg.Init(ev.packet^.data+1, ev.packet^.dataLength-1, True) then exit; + e_LogWritefln('g_Net_Wait_MapInfo: parsing map info packet (rd=%d; max=%d)...', [msg.ReadCount, msg.MaxSize]); + resList.Clear(); + // map wad name + tf.diskName := msg.ReadString(); + e_LogWritefln('g_Net_Wait_MapInfo: map wad is `%s`', [tf.diskName]); + // map wad md5 + tf.hash := msg.ReadMD5(); + // map wad size + tf.size := msg.ReadLongInt(); + e_LogWritefln('g_Net_Wait_MapInfo: map wad size is %d', [tf.size]); + // number of external resources for map + rc := msg.ReadLongInt(); + if (rc < 0) or (rc > 1024) then + begin + e_LogWritefln('g_Net_Wait_Event: invalid number of map external resources (%d)', [rc]); + Result := -1; + exit; + end; + e_LogWritefln('g_Net_Wait_MapInfo: map external resource count is %d', [rc]); + // external resource names + for f := 0 to rc-1 do + begin + s := ExtractFileName(msg.ReadString()); + if (length(s) = 0) then + begin + Result := -1; + exit; + end; + resList.append(s); + end; + e_LogWritefln('g_Net_Wait_MapInfo: got map info', []); + Result := 0; // success + exit; + end + else + begin + e_LogWritefln('g_Net_Wait_Event: invalid server packet type', []); + Result := -1; + exit; + end; + end; + end; + ENET_EVENT_TYPE_DISCONNECT: + begin + if (ev.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) + ev.data)], True); + Result := -1; + exit; + end; + else + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' unknown ENet event ' + IntToStr(Ord(ev.kind)), True); + result := -1; + exit; + end; + end; + if (freePacket) then begin freePacket := false; enet_packet_destroy(ev.packet); end; + end; + ProcessLoading(true); + if g_Net_UserRequestExit() then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' user abort', True); + Result := 1; + exit; + end; + until false; + finally + if (freePacket) then enet_packet_destroy(ev.packet); + end; +end; + + +// returns `false` on error or user abort +// fills: +// diskName (actually, base name) +// hash +// size +// chunkSize +// returns: +// <0 on error +// 0 on success +// 1 on user abort +// 2 on server abort +// for maps, first `tf.diskName` name will be map wad name, and `tf.hash`/`tf.size` will contain map info +function g_Net_RequestResFileInfo (resIndex: LongInt; out tf: TNetFileTransfer): Integer; +var + ev: ENetEvent; + rMsgId: Byte; + Ptr: Pointer; + msg: TMsg; + freePacket: Boolean = false; + ct, ett: Int64; + status: cint; + pkt: PENetPacket; +begin + // send request + msg.Alloc(NET_BUFSIZE); + try + msg.Clear(); + msg.Write(Byte(NTF_CLIENT_FILE_REQUEST)); + msg.Write(resIndex); + pkt := enet_packet_create(msg.Data, msg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then + begin + result := -1; + exit; + end; + if (enet_peer_send(NetPeer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then + begin + result := -1; + exit; + end; + finally + msg.Free(); + end; + + FillChar(ev, SizeOf(ev), 0); + Result := -1; + try + ett := getNewTimeoutEnd(); + repeat + status := enet_host_service(NetHost, @ev, 300); + if (status < 0) then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' network error', True); + Result := -1; + exit; + end; + if (status = 0) then + begin + // check for timeout + ct := GetTimerMS(); + if (ct >= ett) then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' timeout reached', True); + Result := -1; + exit; + end; + end + else + begin + // some event + case ev.kind of + ENET_EVENT_TYPE_RECEIVE: + begin + freePacket := true; + if (ev.channelID <> NET_CHAN_DOWNLOAD_EX) then + begin + //e_LogWriteln('g_Net_Wait_Event: skip message from non-transfer channel'); + end + else + begin + ett := getNewTimeoutEnd(); + if (ev.packet.dataLength < 1) then + begin + e_LogWriteln('g_Net_Wait_Event: invalid server packet (no data)'); + Result := -1; + exit; + end; + Ptr := ev.packet^.data; + rMsgId := Byte(Ptr^); + e_LogWritefln('received transfer packet with id %d (%u bytes)', [rMsgId, ev.packet^.dataLength]); + if (rMsgId = NTF_SERVER_FILE_INFO) then + begin + if not msg.Init(ev.packet^.data+1, ev.packet^.dataLength-1, True) then exit; + tf.hash := msg.ReadMD5(); + tf.size := msg.ReadLongInt(); + tf.chunkSize := msg.ReadLongInt(); + tf.diskName := ExtractFileName(msg.readString()); + if (tf.size < 0) or (tf.chunkSize <> FILE_CHUNK_SIZE) or (length(tf.diskName) = 0) then + begin + e_LogWritefln('g_Net_RequestResFileInfo: invalid file info packet', []); + Result := -1; + exit; + end; + e_LogWritefln('got file info for resource #%d: size=%d; name=%s', [resIndex, tf.size, tf.diskName]); + Result := 0; // success + exit; + end + else if (rMsgId = NTF_SERVER_ABORT) then + begin + e_LogWriteln('g_Net_RequestResFileInfo: server aborted transfer'); + Result := 2; + exit; + end + else if (rMsgId = NTF_SERVER_MAP_INFO) then + begin + e_LogWriteln('g_Net_RequestResFileInfo: waiting for map info reply, but got file info reply'); + Result := -1; + exit; + end + else + begin + e_LogWriteln('g_Net_RequestResFileInfo: invalid server packet type'); + Result := -1; + exit; + end; + end; + end; + ENET_EVENT_TYPE_DISCONNECT: + begin + if (ev.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) + ev.data)], True); + Result := -1; + exit; + end; + else + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' unknown ENet event ' + IntToStr(Ord(ev.kind)), True); + result := -1; + exit; + end; + end; + if (freePacket) then begin freePacket := false; enet_packet_destroy(ev.packet); end; + end; + ProcessLoading(true); + if g_Net_UserRequestExit() then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' user abort', True); + Result := 1; + exit; + end; + until false; + finally + if (freePacket) then enet_packet_destroy(ev.packet); + end; +end; + + +function g_Net_AbortResTransfer (var tf: TNetFileTransfer): Boolean; +var + msg: TMsg; + pkt: PENetPacket; +begin + result := false; + e_LogWritefln('aborting file transfer...', []); + // send request + msg.Alloc(NET_BUFSIZE); + try + msg.Clear(); + msg.Write(Byte(NTF_CLIENT_ABORT)); + pkt := enet_packet_create(msg.Data, msg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then exit; + if (enet_peer_send(NetPeer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then exit; + enet_host_flush(NetHost); + finally + msg.Free(); + end; + result := true; +end; + + +// returns `false` on error or user abort +// fills: +// hash +// size +// chunkSize +// returns: +// <0 on error +// 0 on success +// 1 on user abort +// 2 on server abort +// for maps, first `tf.diskName` name will be map wad name, and `tf.hash`/`tf.size` will contain map info +function g_Net_ReceiveResourceFile (resIndex: LongInt; var tf: TNetFileTransfer; strm: TStream): Integer; +var + ev: ENetEvent; + rMsgId: Byte; + Ptr: Pointer; + msg: TMsg; + omsg: TMsg; + freePacket: Boolean = false; + ct, ett: Int64; + status: cint; + nextChunk: Integer = 0; + chunk: Integer; + csize: Integer; + buf: PChar = nil; + pkt: PENetPacket; +begin + // send request + msg.Alloc(NET_BUFSIZE); + try + msg.Clear(); + msg.Write(Byte(NTF_CLIENT_START)); + msg.Write(LongInt(0)); + pkt := enet_packet_create(msg.Data, msg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then exit; + if (enet_peer_send(NetPeer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then exit; + finally + msg.Free(); + end; + + // wait for reply data + FillChar(ev, SizeOf(ev), 0); + Result := -1; + GetMem(buf, tf.chunkSize); + try + ett := getNewTimeoutEnd(); + repeat + status := enet_host_service(NetHost, @ev, 300); + if (status < 0) then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' network error', True); + Result := -1; + exit; + end; + if (status = 0) then + begin + // check for timeout + ct := GetTimerMS(); + if (ct >= ett) then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' timeout reached', True); + Result := -1; + exit; + end; + end + else + begin + // some event + case ev.kind of + ENET_EVENT_TYPE_RECEIVE: + begin + freePacket := true; + if (ev.channelID <> NET_CHAN_DOWNLOAD_EX) then + begin + //e_LogWritefln('g_Net_Wait_Event: skip message from non-transfer channel', []); + end + else + begin + ett := getNewTimeoutEnd(); + if (ev.packet.dataLength < 1) then + begin + e_LogWritefln('g_Net_ReceiveResourceFile: invalid server packet (no data)', []); + Result := -1; + exit; + end; + Ptr := ev.packet^.data; + rMsgId := Byte(Ptr^); + if (rMsgId = NTF_SERVER_DONE) then + begin + e_LogWritefln('file transfer complete.', []); + result := 0; + exit; + end + else if (rMsgId = NTF_SERVER_CHUNK) then + begin + if not msg.Init(ev.packet^.data+1, ev.packet^.dataLength-1, True) then exit; + chunk := msg.ReadLongInt(); + csize := msg.ReadLongInt(); + if (chunk <> nextChunk) then + begin + e_LogWritefln('received chunk %d, but expected chunk %d', [chunk, nextChunk]); + Result := -1; + exit; + end; + if (csize < 0) or (csize > tf.chunkSize) then + begin + e_LogWritefln('received chunk with size %d, but expected chunk size is %d', [csize, tf.chunkSize]); + Result := -1; + exit; + end; + e_LogWritefln('got chunk #%d of #%d (csize=%d)', [chunk, (tf.size+tf.chunkSize-1) div tf.chunkSize, csize]); + msg.ReadData(buf, csize); + strm.WriteBuffer(buf^, csize); + nextChunk := chunk+1; + // send ack + omsg.Alloc(NET_BUFSIZE); + try + omsg.Clear(); + omsg.Write(Byte(NTF_CLIENT_ACK)); + omsg.Write(LongInt(chunk)); + pkt := enet_packet_create(omsg.Data, omsg.CurSize, ENET_PACKET_FLAG_RELIABLE); + if not Assigned(pkt) then exit; + if (enet_peer_send(NetPeer, NET_CHAN_DOWNLOAD_EX, pkt) <> 0) then exit; + finally + omsg.Free(); + end; + end + else if (rMsgId = NTF_SERVER_ABORT) then + begin + e_LogWritefln('g_Net_ReceiveResourceFile: server aborted transfer', []); + Result := 2; + exit; + end + else + begin + e_LogWritefln('g_Net_ReceiveResourceFile: invalid server packet type', []); + Result := -1; + exit; + end; + end; + end; + ENET_EVENT_TYPE_DISCONNECT: + begin + if (ev.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) + ev.data)], True); + Result := -1; + exit; + end; + else + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' unknown ENet event ' + IntToStr(Ord(ev.kind)), True); + result := -1; + exit; + end; + end; + if (freePacket) then begin freePacket := false; enet_packet_destroy(ev.packet); end; + end; + ProcessLoading(true); + if g_Net_UserRequestExit() then + begin + g_Console_Add(_lc[I_NET_MSG_ERROR] + _lc[I_NET_ERR_CONN] + ' user abort', True); + Result := 1; + exit; + end; + until false; + finally + FreeMem(buf); + if (freePacket) then enet_packet_destroy(ev.packet); + end; +end; + function g_Net_IsHostBanned(IP: LongWord; Perm: Boolean = False): Boolean; var @@ -1343,6 +2329,7 @@ end; initialization conRegVar('cl_downloadtimeout', @g_Net_DownloadTimeout, 0.0, 1000000.0, '', 'timeout in seconds, 0 to disable it'); + SetLength(NetClients, 0); g_Net_DownloadTimeout := 60; NetIn.Alloc(NET_BUFSIZE); NetOut.Alloc(NET_BUFSIZE);