unit uFLNet;
interface
procedure connectOfficialServer;
procedure initModule;
procedure freeModule;
procedure sendNet(s: shortstring);
procedure sendNetLn(s: shortstring);
var isConnected: boolean = false;
implementation
uses SDLh, uFLIPC, uFLTypes, uFLUICallback, uFLNetTypes, uFLUtils;
const endCmd: shortstring = #10 + #10;
function getNextChar: char; forward;
function getCurrChar: char; forward;
type
TParserState = record
cmd: TCmdType;
l: LongInt;
buf: shortstring;
bufpos: byte;
end;
PHandler = procedure;
var state: TParserState;
procedure handleTail; forward;
function getShortString: shortstring; forward;
function getLongString: ansistring; forward;
procedure handler_;
begin
sendUI(mtNetData, @state.cmd, sizeof(state.cmd));
handleTail()
end;
procedure handler_L;
var cmd: TCmdParamL;
begin
cmd.cmd:= state.cmd;
cmd.str1:= getLongString;
if length(cmd.str1) = 0 then exit;
sendUI(mtNetData, @cmd, sizeof(cmd));
handleTail()
end;
procedure handler_ML;
var cmd: TCmdParamL;
f: boolean;
begin
sendUI(mtNetData, @state.cmd, sizeof(state.cmd));
cmd.cmd:= Succ(state.cmd);
repeat
cmd.str1:= getLongString;
f:= cmd.str1[0] <> #0;
if f then
sendUI(mtNetData, @cmd, sizeof(cmd));
until not f;
state.l:= 0
end;
procedure handler_MS;
var cmd: TCmdParamS;
f: boolean;
begin
sendUI(mtNetData, @state.cmd, sizeof(state.cmd));
cmd.cmd:= Succ(state.cmd);
repeat
cmd.str1:= getShortString;
f:= cmd.str1[0] <> #0;
if f then
sendUI(mtNetData, @cmd, sizeof(cmd));
until not f;
state.l:= 0
end;
procedure handler_S;
var cmd: TCmdParamS;
begin
cmd.cmd:= state.cmd;
cmd.str1:= getShortString;
if cmd.str1[0] = #0 then exit;
sendUI(mtNetData, @cmd, sizeof(cmd));
handleTail()
end;
procedure handler_SL;
var cmd: TCmdParamSL;
begin
cmd.cmd:= state.cmd;
cmd.str1:= getShortString;
if cmd.str1[0] = #0 then exit;
cmd.str2:= getLongString;
if cmd.str2[0] = #0 then exit;
sendUI(mtNetData, @cmd, sizeof(cmd));
handleTail()
end;
procedure handler_SMS;
var cmd: TCmdParamS;
f: boolean;
begin
cmd.cmd:= state.cmd;
cmd.str1:= getShortString;
if cmd.str1[0] = #0 then exit;
sendUI(mtNetData, @cmd, sizeof(cmd));
cmd.cmd:= Succ(state.cmd);
repeat
cmd.str1:= getShortString;
f:= cmd.str1[0] <> #0;
if f then
sendUI(mtNetData, @cmd, sizeof(cmd));
until not f;
state.l:= 0
end;
procedure handler_SS;
var cmd: TCmdParamSS;
begin
cmd.cmd:= state.cmd;
cmd.str1:= getShortString;
if cmd.str1[0] = #0 then exit;
cmd.str2:= getShortString;
if cmd.str2[0] = #0 then exit;
sendUI(mtNetData, @cmd, sizeof(cmd));
handleTail()
end;
procedure handler__i;
var cmd: TCmdParami;
s: shortstring;
begin
s:= getShortString();
if s[0] = #0 then exit;
cmd.cmd:= state.cmd;
s:= getShortString();
if s[0] = #0 then exit;
cmd.param1:= strToInt(s);
sendUI(mtNetData, @cmd, sizeof(cmd));
handleTail()
end;
procedure handler_i;
var cmd: TCmdParami;
s: shortstring;
begin
s:= getShortString();
if s[0] = #0 then exit;
cmd.cmd:= state.cmd;
cmd.param1:= strToInt(s);
sendUI(mtNetData, @cmd, sizeof(cmd));
handleTail()
end;
procedure handler__UNKNOWN_;
begin
//writeln('[NET] Unknown cmd');
handleTail();
state.l:= 0
end;
const net2cmd: array[0..46] of TCmdType = (cmd_WARNING, cmd_WARNING,
cmd_TEAM_COLOR, cmd_TEAM_ACCEPTED, cmd_SERVER_VARS, cmd_SERVER_MESSAGE,
cmd_SERVER_AUTH, cmd_RUN_GAME, cmd_ROUND_FINISHED, cmd_ROOM_UPD, cmd_ROOM_DEL,
cmd_ROOM_ADD, cmd_ROOMS, cmd_REMOVE_TEAM, cmd_PROTO, cmd_PING, cmd_NOTICE,
cmd_NICK, cmd_LOBBY_LEFT, cmd_LOBBY_JOINED, cmd_LEFT, cmd_KICKED, cmd_JOINING,
cmd_JOINED, cmd_INFO, cmd_HH_NUM, cmd_ERROR, cmd_EM, cmd_CONNECTED,
cmd_CLIENT_FLAGS, cmd_CHAT, cmd_CFG_THEME, cmd_CFG_TEMPLATE, cmd_CFG_SEED,
cmd_CFG_SCRIPT, cmd_CFG_SCHEME, cmd_CFG_MAZE_SIZE, cmd_CFG_MAP, cmd_CFG_MAPGEN,
cmd_CFG_FULLMAPCONFIG, cmd_CFG_FEATURE_SIZE, cmd_CFG_DRAWNMAP, cmd_CFG_AMMO,
cmd_BYE, cmd_BANLIST, cmd_ASKPASSWORD, cmd_ADD_TEAM);
const letters: array[0..332] of char = ('A', 'D', 'D', '_', 'T', 'E', 'A', 'M',
#10, 'S', 'K', 'P', 'A', 'S', 'S', 'W', 'O', 'R', 'D', #10, 'B', 'A', 'N', 'L',
'I', 'S', 'T', #10, 'Y', 'E', #10, 'C', 'F', 'G', #10, 'A', 'M', 'M', 'O', #10,
'D', 'R', 'A', 'W', 'N', 'M', 'A', 'P', #10, 'F', 'E', 'A', 'T', 'U', 'R', 'E',
'_', 'S', 'I', 'Z', 'E', #10, 'U', 'L', 'L', 'M', 'A', 'P', 'C', 'O', 'N', 'F',
'I', 'G', #10, 'M', 'A', 'P', 'G', 'E', 'N', #10, #10, 'Z', 'E', '_', 'S', 'I',
'Z', 'E', #10, 'S', 'C', 'H', 'E', 'M', 'E', #10, 'R', 'I', 'P', 'T', #10, 'E',
'E', 'D', #10, 'T', 'E', 'M', 'P', 'L', 'A', 'T', 'E', #10, 'H', 'E', 'M', 'E',
#10, 'H', 'A', 'T', #10, 'L', 'I', 'E', 'N', 'T', '_', 'F', 'L', 'A', 'G', 'S',
#10, 'O', 'N', 'N', 'E', 'C', 'T', 'E', 'D', #10, 'E', 'M', #10, 'R', 'R', 'O',
'R', #10, 'H', 'H', '_', 'N', 'U', 'M', #10, 'I', 'N', 'F', 'O', #10, 'J', 'O',
'I', 'N', 'E', 'D', #10, 'I', 'N', 'G', #10, 'K', 'I', 'C', 'K', 'E', 'D', #10,
'L', 'E', 'F', 'T', #10, 'O', 'B', 'B', 'Y', ':', 'J', 'O', 'I', 'N', 'E', 'D',
#10, 'L', 'E', 'F', 'T', #10, 'N', 'I', 'C', 'K', #10, 'O', 'T', 'I', 'C', 'E',
#10, 'P', 'I', 'N', 'G', #10, 'R', 'O', 'T', 'O', #10, 'R', 'E', 'M', 'O', 'V',
'E', '_', 'T', 'E', 'A', 'M', #10, 'O', 'O', 'M', 'S', #10, #10, 'A', 'D', 'D',
#10, 'D', 'E', 'L', #10, 'U', 'P', 'D', #10, 'U', 'N', 'D', '_', 'F', 'I', 'N',
'I', 'S', 'H', 'E', 'D', #10, 'U', 'N', '_', 'G', 'A', 'M', 'E', #10, 'S', 'E',
'R', 'V', 'E', 'R', '_', 'A', 'U', 'T', 'H', #10, 'M', 'E', 'S', 'S', 'A', 'G',
'E', #10, 'V', 'A', 'R', 'S', #10, 'T', 'E', 'A', 'M', '_', 'A', 'C', 'C', 'E',
'P', 'T', 'E', 'D', #10, 'C', 'O', 'L', 'O', 'R', #10, 'W', 'A', 'R', 'N', 'I',
'N', 'G', #10, #0, #10);
const commands: array[0..332] of integer = (20, 8, 0, 0, 0, 0, 0, 0, -56, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, -55, 11, 7, 0, 0, 0, 0, 0, -54, 0, 0, -53, 115, 89, 0,
0, 5, 0, 0, 0, -52, 9, 0, 0, 0, 0, 0, 0, 0, -51, 26, 12, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, -50, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -49, 16, 0, 6, 4, 0, 0, -48, -47,
0, 0, 0, 0, 0, 0, 0, -46, 16, 11, 5, 0, 0, 0, -45, 0, 0, 0, 0, -44, 0, 0, 0,
-43, 0, 8, 0, 0, 0, 0, 0, 0, -42, 0, 0, 0, 0, -41, 4, 0, 0, -40, 12, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, -39, 0, 0, 0, 0, 0, 0, 0, 0, -38, 8, 2, -37, 0, 0, 0, 0, -36,
7, 0, 0, 0, 0, 0, -35, 5, 0, 0, 0, -34, 11, 0, 0, 0, 3, 0, -33, 0, 0, 0, -32, 7,
0, 0, 0, 0, 0, -31, 22, 4, 0, 0, -30, 0, 0, 0, 0, 0, 7, 0, 0, 0, 0, 0, -29, 0,
0, 0, 0, -28, 11, 4, 0, 0, -27, 0, 0, 0, 0, 0, -26, 10, 4, 0, 0, -25, 0, 0, 0,
0, -24, 51, 11, 0, 0, 0, 0, 0, 0, 0, 0, 0, -23, 31, 17, 0, 2, -22, 0, 4, 0, 0,
-21, 4, 0, 0, -20, 0, 0, 0, -19, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -18, 0, 0,
0, 0, 0, 0, 0, -17, 25, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, -16, 8, 0, 0, 0, 0, 0, 0,
-15, 0, 0, 0, 0, -14, 20, 0, 0, 0, 0, 9, 0, 0, 0, 0, 0, 0, 0, -13, 0, 0, 0, 0,
0, -12, 8, 0, 0, 0, 0, 0, 0, -11, 0, -10);
const handlers: array[0..46] of PHandler = (@handler__UNKNOWN_, @handler_L,
@handler_SS, @handler_S, @handler_SL, @handler_L, @handler_S, @handler_,
@handler_, @handler_MS, @handler_S, @handler_MS, @handler_MS, @handler_S,
@handler_i, @handler_MS, @handler_L, @handler_S, @handler_SL, @handler_MS,
@handler_SL, @handler_, @handler_S, @handler_MS, @handler_MS, @handler_SS,
@handler_L, @handler_ML, @handler__i, @handler_SMS, @handler_SL, @handler_S,
@handler_i, @handler_S, @handler_S, @handler_MS, @handler_i, @handler_i,
@handler_S, @handler_MS, @handler_i, @handler_L, @handler_SL, @handler_SL,
@handler_MS, @handler_S, @handler_MS);
procedure handleTail;
var cnt: Longint;
c: char;
begin
c:= getCurrChar;
repeat
if c = #10 then cnt:= 0 else cnt:= 1;
repeat
c:= getNextChar;
inc(cnt)
until (c = #0) or (c = #10);
until (c = #0) or (cnt = 1);
state.l:= 0
end;
var sock: PTCPSocket;
netReaderThread: PSDL_Thread;
function getCurrChar: char;
begin
getCurrChar:= state.buf[state.bufpos]
end;
function getNextChar: char;
var r: byte;
begin
if state.bufpos < byte(state.buf[0]) then
begin
inc(state.bufpos);
end else
begin
r:= SDLNet_TCP_Recv(sock, @state.buf[1], 255);
if r > 0 then
begin
state.bufpos:= 1;
state.buf[0]:= char(r);
end else
begin
state.bufpos:= 0;
state.buf[0]:= #0;
end
end;
getNextChar:= state.buf[state.bufpos];
end;
function netReader(data: pointer): LongInt; cdecl; export;
var c: char;
ipaddr: TIPAddress;
begin
netReader:= 0;
if SDLNet_ResolveHost(ipaddr, PChar('netserver.hedgewars.org'), 46631) = 0 then
sock:= SDLNet_TCP_Open(ipaddr);
repeat
c:= getNextChar;
//writeln('>>>>> ', c, ' [', letters[state.l], '] ', commands[state.l], ' ', state.l);
if c = #0 then
isConnected:= false
else
begin
while (letters[state.l] <> c) and (commands[state.l] > 0) do
inc(state.l, commands[state.l]);
if c = letters[state.l] then
if commands[state.l] < 0 then
begin
state.cmd:= net2cmd[-10 - commands[state.l]];
//writeln('[NET] ', state.cmd);
handlers[-10 - commands[state.l]]();
state.l:= 0
end
else
inc(state.l)
else
begin
handler__UNKNOWN_()
end
end
until not isConnected;
SDLNet_TCP_Close(sock);
sock:= nil;
writeln('[NET] netReader: disconnected');
end;
procedure sendNet(s: shortstring);
begin
writeln('[NET] Send: ', s);
ipcToNet(s + endCmd);
end;
procedure sendNetLn(s: shortstring);
begin
writeln('[NET] Send: ', s);
ipcToNet(s + #10);
end;
function getShortString: shortstring;
var s: shortstring;
c: char;
begin
s[0]:= #0;
repeat
inc(s[0]);
s[byte(s[0])]:= getNextChar
until (s[0] = #255) or (s[byte(s[0])] = #10) or (s[byte(s[0])] = #0);
if s[byte(s[0])] = #10 then
dec(s[0])
else
repeat c:= getNextChar until (c = #0) or (c = #10);
getShortString:= s
end;
function getLongString: ansistring;
var s: shortstring;
l: ansistring;
c: char;
begin
l:= '';
repeat
s[0]:= #0;
repeat
inc(s[0]);
c:= getNextChar;
s[byte(s[0])]:= c
until (s[0] = #255) or (c = #10) or (c = #0);
if s[byte(s[0])] = #10 then
dec(s[0]);
l:= l + s
until (c = #10) or (c = #0);
getLongString:= l
end;
procedure netSendCallback(p: pointer; msg: PChar; len: Longword);
begin
// W A R N I N G: totally thread-unsafe due to use of sock variable
SDLNet_TCP_Send(sock, msg, len);
end;
procedure connectOfficialServer;
begin
if sock <> nil then
exit;
state.bufpos:= 0;
state.buf:= '';
state.l:= 0;
isConnected:= true;
netReaderThread:= SDL_CreateThread(@netReader, 'netReader', nil);
SDL_DetachThread(netReaderThread)
end;
procedure initModule;
begin
sock:= nil;
isConnected:= false;
SDLNet_Init;
registerNetCallback(nil, @netSendCallback);
end;
procedure freeModule;
begin
end;
end.