protected virtual GameMsg_SvVoteStatus UnpackSvVoteStatus(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvVoteStatus
{
Yes = unpacker.GetInt(),
No = unpacker.GetInt(),
Pass = unpacker.GetInt(),
Total = unpacker.GetInt(),
};
if (msg.Yes < 0)
{
failedOn = "Yes";
}
if (msg.No < 0)
{
failedOn = "No";
}
if (msg.Pass < 0)
{
failedOn = "Pass";
}
if (msg.Total < 0)
{
failedOn = "Total";
}
return(msg);
}
protected override void NetMsgInput(NetworkChunk packet, Unpacker unpacker, int clientId)
{
Clients[clientId].LastAckedSnapshot = unpacker.GetInt();
var intendedTick = unpacker.GetInt();
var size = unpacker.GetInt();
if (unpacker.Error || size / sizeof(int) > BaseServerClient.MAX_INPUT_SIZE)
{
return;
}
if (Clients[clientId].LastAckedSnapshot > 0)
{
Clients[clientId].SnapRate = SnapRate.FULL;
}
if (Clients[clientId].SnapshotStorage.Get(
Clients[clientId].LastAckedSnapshot,
out var tagTime,
out var _))
{
Clients[clientId].Latency =
(int)(((Time.Get() - tagTime) * 1000) / Time.Freq());
}
if (intendedTick > Clients[clientId].LastInputTick)
{
var timeLeft = (TickStartTime(intendedTick) - Time.Get()) * 1000 / Time.Freq();
var msg = new MsgPacker((int)NetworkMessages.SV_INPUT_TIMING);
msg.AddInt(intendedTick);
msg.AddInt((int)timeLeft);
SendMsgEx(msg, MsgFlags.NONE, clientId, true);
}
Clients[clientId].LastInputTick = intendedTick;
var input = Clients[clientId].Inputs[Clients[clientId].CurrentInput];
if (intendedTick <= Tick)
{
intendedTick = Tick + 1;
}
var data = new int[size / sizeof(int)];
for (var i = 0; i < data.Length; i++)
{
data[i] = unpacker.GetInt();
}
input.Tick = intendedTick;
input.PlayerInput.Deserialize(data, 0);
Clients[clientId].CurrentInput++;
Clients[clientId].CurrentInput %= Clients[clientId].Inputs.Length;
if (Clients[clientId].State == ServerClientState.IN_GAME)
{
GameContext.OnClientDirectInput(clientId, input.PlayerInput);
}
}
protected virtual GameMsg_SvKillMsg UnpackSvKillMsg(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvKillMsg
{
Killer = unpacker.GetInt(),
Victim = unpacker.GetInt(),
Weapon = (Weapon)unpacker.GetInt(),
ModeSpecial = unpacker.GetInt()
};
if (msg.Killer < 0)
{
failedOn = "Killer";
}
if (msg.Victim < 0)
{
failedOn = "Victim";
}
if (msg.Weapon < Weapon.GAME)
{
failedOn = "Weapon";
}
return(msg);
}
protected virtual GameMsg_ClChangeInfo UnpackClChangeInfo(
Unpacker unpacker, ref string failedOn)
{
return(new GameMsg_ClChangeInfo
{
Name = unpacker.GetString(CC_TRIM),
Clan = unpacker.GetString(CC_TRIM),
Country = unpacker.GetInt(),
Skin = unpacker.GetString(CC_TRIM),
UseCustomColor = unpacker.GetInt() != 0,
ColorBody = unpacker.GetInt(),
ColorFeet = unpacker.GetInt()
});
}
protected virtual GameMsg_SvVoteOptionListAdd UnpackSvVoteOptionListAdd(
Unpacker unpacker, ref string failedOn)
{
var msg = new GameMsg_SvVoteOptionListAdd
{
NumOptions = unpacker.GetInt(),
Description0 = unpacker.GetString(CC_TRIM),
Description1 = unpacker.GetString(CC_TRIM),
Description2 = unpacker.GetString(CC_TRIM),
Description3 = unpacker.GetString(CC_TRIM),
Description4 = unpacker.GetString(CC_TRIM),
Description5 = unpacker.GetString(CC_TRIM),
Description6 = unpacker.GetString(CC_TRIM),
Description7 = unpacker.GetString(CC_TRIM),
Description8 = unpacker.GetString(CC_TRIM),
Description9 = unpacker.GetString(CC_TRIM),
Description10 = unpacker.GetString(CC_TRIM),
Description11 = unpacker.GetString(CC_TRIM),
Description12 = unpacker.GetString(CC_TRIM),
Description13 = unpacker.GetString(CC_TRIM),
Description14 = unpacker.GetString(CC_TRIM),
};
if (msg.NumOptions < 1 || msg.NumOptions > 15)
{
failedOn = "NumOptions";
}
return(msg);
}
protected virtual GameMsg_SvChat UnpackSvChat(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvChat
{
IsTeam = unpacker.GetInt() != 0,
ClientId = unpacker.GetInt(),
Message = unpacker.GetString()
};
if (msg.ClientId < -1)
{
failedOn = "ClientId";
}
return(msg);
}
protected virtual bool DecodeLegacyHandShake(byte[] data, int dataSize, out uint legacyToken)
{
var unpacker = new Unpacker();
unpacker.Reset(data, dataSize);
var msgId = unpacker.GetInt();
var token = unpacker.GetInt();
if (unpacker.Error || msgId != System(NetworkMessages.CL_INPUT))
{
legacyToken = 0;
return(false);
}
legacyToken = (uint)token;
return(true);
}
protected virtual GameMsg_ClSay UnpackClSay(Unpacker unpacker,
ref string failedOn)
{
return(new GameMsg_ClSay
{
IsTeam = unpacker.GetInt() != 0,
Message = unpacker.GetString()
});
}
protected virtual GameMsg_SvEmoticon UnpackSvEmoticon(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvEmoticon
{
ClientId = unpacker.GetInt(),
Emoticon = (Emoticons)unpacker.GetInt(),
};
if (msg.ClientId < 0)
{
failedOn = "ClientId";
}
if (msg.Emoticon < 0 || msg.Emoticon >= Emoticons.NUM_EMOTICONS)
{
failedOn = "Emoticon";
}
return(msg);
}
protected virtual GameMsg_ClSetSpectatorMode UnpackClSetSpectatorMode(
Unpacker unpacker, ref string failedOn)
{
var msg = new GameMsg_ClSetSpectatorMode
{
SpectatorId = unpacker.GetInt()
};
if (msg.SpectatorId < -1)
{
failedOn = "SpectatorId";
}
return(msg);
}
protected virtual GameMsg_ClSetTeam UnpackClSetTeam(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_ClSetTeam
{
Team = (Team)unpacker.GetInt()
};
if (msg.Team < Team.SPECTATORS || msg.Team > Team.BLUE)
{
failedOn = "Team";
}
return(msg);
}
protected virtual GameMsg_SvWeaponPickup UnpackSvWeaponPickup(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvWeaponPickup
{
Weapon = (Weapon)unpacker.GetInt()
};
if (msg.Weapon < 0 || msg.Weapon >= Weapon.NUM_WEAPONS)
{
failedOn = "Weapon";
}
return(msg);
}
protected virtual GameMsg_SvSoundGlobal UnpackSvSoundGlobal(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvSoundGlobal
{
Sound = (Sound)unpacker.GetInt()
};
if (msg.Sound < 0 || msg.Sound >= Sound.NUM_SOUNDS)
{
failedOn = "Sound";
}
return(msg);
}
protected virtual GameMsg_ClVote UnpackClVote(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_ClVote
{
Vote = unpacker.GetInt()
};
if (msg.Vote < -1 || msg.Vote > 1)
{
failedOn = "Vote";
}
return(msg);
}
protected virtual GameMsg_ClEmoticon UnpackClEmoticon(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_ClEmoticon
{
Emoticon = (Emoticons)unpacker.GetInt()
};
if (msg.Emoticon < 0 || msg.Emoticon >= Emoticons.NUM_EMOTICONS)
{
failedOn = "Emoticon";
}
return(msg);
}
protected virtual GameMsg_SvVoteSet UnpackSvVoteSet(Unpacker unpacker,
ref string failedOn)
{
var msg = new GameMsg_SvVoteSet
{
Timeout = unpacker.GetInt(),
Description = unpacker.GetString(CC_TRIM),
Reason = unpacker.GetString(CC_TRIM)
};
if (msg.Timeout < 0 || msg.Timeout > 60)
{
failedOn = "Timeout";
}
return(msg);
}
protected virtual void OnMsgIsDDNet(Unpacker unpacker, BasePlayer player, GameMsg_ClIsDDNet msg)
{
var version = unpacker.GetInt();
if (unpacker.Error)
{
if (player.ClientVersion < ClientVersion.DDRACE)
{
player.ClientVersion = ClientVersion.DDRACE;
}
}
else
{
player.ClientVersion = (ClientVersion)version;
}
Debug.Warning("ddnet", $"{player.ClientId} using ddnet client ({player.ClientVersion})");
}
protected override void NetMsgRequestMapData(NetworkChunk packet, Unpacker unpacker, int clientId)
{
if (Clients[clientId].State < ServerClientState.CONNECTING)
{
return;
}
var chunk = unpacker.GetInt();
var chunkSize = 1024 - 128;
var offset = chunk * chunkSize;
var last = 0;
_lastAsk[clientId] = chunk;
_lastAskTick[clientId] = Tick;
if (chunk == 0)
{
_lastSent[clientId] = 0;
}
if (chunk < 0 || offset > CurrentMap.Size)
{
return;
}
if (offset + chunkSize >= CurrentMap.Size)
{
chunkSize = CurrentMap.Size - offset;
last = 1;
if (chunkSize < 0)
{
chunkSize = 0;
}
}
if (_lastSent[clientId] < chunk + Config["SvMapWindow"] &&
Config["SvFastDownload"])
{
return;
}
SendMapData(last, chunk, chunkSize, offset, clientId);
}
protected override void ProcessClientPacket(NetworkChunk packet)
{
var clientId = packet.ClientId;
var unpacker = new Unpacker();
unpacker.Reset(packet.Data, packet.DataSize);
var msg = unpacker.GetInt();
var isSystemMsg = (msg & 1) != 0;
msg >>= 1;
if (unpacker.Error)
{
return;
}
if (Config["SvNetlimit"] &&
!(isSystemMsg && msg == (int)NetworkMessages.CL_REQUEST_MAP_DATA))
{
var now = Time.Get();
var diff = now - Clients[clientId].TrafficSince;
var alpha = Config["SvNetlimitAlpha"] / 100f;
var limit = (float)Config["SvNetlimit"] * 1024 / Time.Freq();
if (Clients[clientId].Traffic > limit)
{
NetworkBan.BanAddr(packet.EndPoint, 600, "Stressing network");
return;
}
if (diff > 100)
{
Clients[clientId].Traffic = (int)(alpha * ((float)packet.DataSize / diff) +
(1.0f - alpha) * Clients[clientId].Traffic);
Clients[clientId].TrafficSince = now;
}
}
if (isSystemMsg)
{
var networkMsg = (NetworkMessages)msg;
switch (networkMsg)
{
case NetworkMessages.CL_INFO:
NetMsgInfo(packet, unpacker, clientId);
break;
case NetworkMessages.CL_REQUEST_MAP_DATA:
NetMsgRequestMapData(packet, unpacker, clientId);
break;
case NetworkMessages.CL_READY:
NetMsgReady(packet, unpacker, clientId);
break;
case NetworkMessages.CL_ENTERGAME:
NetMsgEnterGame(packet, unpacker, clientId);
break;
case NetworkMessages.CL_INPUT:
NetMsgInput(packet, unpacker, clientId);
break;
case NetworkMessages.CL_RCON_CMD:
NetMsgRconCmd(packet, unpacker, clientId);
break;
case NetworkMessages.CL_RCON_AUTH:
NetMsgRconAuth(packet, unpacker, clientId);
break;
case NetworkMessages.PING:
NetMsgPing(packet, unpacker, clientId);
break;
default:
Console.Print(OutputLevel.DEBUG, "server", $"strange message clientId={clientId} msg={msg} data_size={packet.DataSize}");
break;
}
}
else if (Clients[clientId].State >= ServerClientState.READY)
{
GameContext.OnMessage(msg, unpacker, clientId);
}
}
