void CServer::ProcessClientPacket(CNetChunk *pPacket)
{
int ClientID = pPacket->m_ClientID;
CUnpacker Unpacker;
Unpacker.Reset(pPacket->m_pData, pPacket->m_DataSize);
// unpack msgid and system flag
int Msg = Unpacker.GetInt();
int Sys = Msg&1;
Msg >>= 1;
if(Unpacker.Error())
return;
if(Sys)
{
// system message
if(Msg == NETMSG_INFO)
{
if(m_aClients[ClientID].m_State == CClient::STATE_AUTH)
{
char aVersion[64];
str_copy(aVersion, Unpacker.GetString(CUnpacker::SANITIZE_CC), 64);
bool CustClt = str_comp(aVersion, GameServer()->NetVersionCust()) == 0;
dbg_msg("es", "%s client connected!", CustClt?"cust":"vanilla");
if(!CustClt && str_comp(aVersion, GameServer()->NetVersion()) != 0)
{
// wrong version
char aReason[256];
str_format(aReason, sizeof(aReason), "Wrong version. Server is running '%s' and client '%s'", GameServer()->NetVersion(), aVersion);
m_NetServer.Drop(ClientID, aReason);
return;
}
const char *pPassword = Unpacker.GetString(CUnpacker::SANITIZE_CC);
if(g_Config.m_Password[0] != 0 && str_comp(g_Config.m_Password, pPassword) != 0)
{
// wrong password
m_NetServer.Drop(ClientID, "Wrong password");
return;
}
m_aClients[ClientID].m_State = CClient::STATE_CONNECTING;
m_aClients[ClientID].m_CustClt = CustClt;
SendMap(ClientID);
}
}
else if(Msg == NETMSG_REQUEST_MAP_DATA)
{
int Chunk = Unpacker.GetInt();
int ChunkSize = 1024-128;
int Offset = Chunk * ChunkSize;
int Last = 0;
// drop faulty map data requests
if(Chunk < 0 || Offset > m_CurrentMapSize)
return;
if(Offset+ChunkSize >= m_CurrentMapSize)
{
ChunkSize = m_CurrentMapSize-Offset;
if(ChunkSize < 0)
ChunkSize = 0;
Last = 1;
}
CMsgPacker Msg(NETMSG_MAP_DATA);
Msg.AddInt(Last);
Msg.AddInt(m_CurrentMapCrc);
Msg.AddInt(Chunk);
Msg.AddInt(ChunkSize);
Msg.AddRaw(&m_pCurrentMapData[Offset], ChunkSize);
SendMsgEx(&Msg, MSGFLAG_VITAL|MSGFLAG_FLUSH, ClientID, true);
if(g_Config.m_Debug)
{
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "sending chunk %d with size %d", Chunk, ChunkSize);
Console()->Print(IConsole::OUTPUT_LEVEL_DEBUG, "server", aBuf);
}
}
else if(Msg == NETMSG_READY)
{
if(m_aClients[ClientID].m_State == CClient::STATE_CONNECTING)
{
char aAddrStr[NETADDR_MAXSTRSIZE];
net_addr_str(m_NetServer.ClientAddr(ClientID), aAddrStr, sizeof(aAddrStr), true);
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "player is ready. ClientID=%x addr=%s", ClientID, aAddrStr);
Console()->Print(IConsole::OUTPUT_LEVEL_ADDINFO, "server", aBuf);
m_aClients[ClientID].m_State = CClient::STATE_READY;
GameServer()->OnClientConnected(ClientID);
SendConnectionReady(ClientID);
}
}
else if(Msg == NETMSG_ENTERGAME)
{
if(m_aClients[ClientID].m_State == CClient::STATE_READY && GameServer()->IsClientReady(ClientID))
{
char aAddrStr[NETADDR_MAXSTRSIZE];
net_addr_str(m_NetServer.ClientAddr(ClientID), aAddrStr, sizeof(aAddrStr), true);
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "player has entered the game. ClientID=%x addr=%s", ClientID, aAddrStr);
Console()->Print(IConsole::OUTPUT_LEVEL_STANDARD, "server", aBuf);
m_aClients[ClientID].m_State = CClient::STATE_INGAME;
GameServer()->OnClientEnter(ClientID);
}
}
else if(Msg == NETMSG_INPUT)
{
CClient::CInput *pInput;
int64 TagTime;
m_aClients[ClientID].m_LastAckedSnapshot = Unpacker.GetInt();
int IntendedTick = Unpacker.GetInt();
int Size = Unpacker.GetInt();
// check for errors
if(Unpacker.Error() || Size/4 > MAX_INPUT_SIZE)
return;
if(m_aClients[ClientID].m_LastAckedSnapshot > 0)
m_aClients[ClientID].m_SnapRate = CClient::SNAPRATE_FULL;
if(m_aClients[ClientID].m_Snapshots.Get(m_aClients[ClientID].m_LastAckedSnapshot, &TagTime, 0, 0) >= 0)
m_aClients[ClientID].m_Latency = (int)(((time_get()-TagTime)*1000)/time_freq());
// add message to report the input timing
// skip packets that are old
if(IntendedTick > m_aClients[ClientID].m_LastInputTick)
{
int TimeLeft = ((TickStartTime(IntendedTick)-time_get())*1000) / time_freq();
CMsgPacker Msg(NETMSG_INPUTTIMING);
Msg.AddInt(IntendedTick);
Msg.AddInt(TimeLeft);
SendMsgEx(&Msg, 0, ClientID, true);
}
m_aClients[ClientID].m_LastInputTick = IntendedTick;
pInput = &m_aClients[ClientID].m_aInputs[m_aClients[ClientID].m_CurrentInput];
if(IntendedTick <= Tick())
IntendedTick = Tick()+1;
pInput->m_GameTick = IntendedTick;
for(int i = 0; i < Size/4; i++)
pInput->m_aData[i] = Unpacker.GetInt();
mem_copy(m_aClients[ClientID].m_LatestInput.m_aData, pInput->m_aData, MAX_INPUT_SIZE*sizeof(int));
m_aClients[ClientID].m_CurrentInput++;
m_aClients[ClientID].m_CurrentInput %= 200;
// call the mod with the fresh input data
if(m_aClients[ClientID].m_State == CClient::STATE_INGAME)
GameServer()->OnClientDirectInput(ClientID, m_aClients[ClientID].m_LatestInput.m_aData);
}
else if(Msg == NETMSG_RCON_CMD)
{
const char *pCmd = Unpacker.GetString();
if(Unpacker.Error() == 0 && m_aClients[ClientID].m_Authed)
{
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "ClientID=%d rcon='%s'", ClientID, pCmd);
Console()->Print(IConsole::OUTPUT_LEVEL_ADDINFO, "server", aBuf);
m_RconClientID = ClientID;
m_RconAuthLevel = m_aClients[ClientID].m_Authed;
Console()->SetAccessLevel(m_aClients[ClientID].m_Authed == AUTHED_ADMIN ? IConsole::ACCESS_LEVEL_ADMIN : IConsole::ACCESS_LEVEL_MOD);
Console()->ExecuteLineFlag(pCmd, CFGFLAG_SERVER);
Console()->SetAccessLevel(IConsole::ACCESS_LEVEL_ADMIN);
m_RconClientID = IServer::RCON_CID_SERV;
m_RconAuthLevel = AUTHED_ADMIN;
}
}
else if(Msg == NETMSG_RCON_AUTH)
{
const char *pPw;
Unpacker.GetString(); // login name, not used
pPw = Unpacker.GetString(CUnpacker::SANITIZE_CC);
if(Unpacker.Error() == 0)
{
if(g_Config.m_SvRconPassword[0] == 0 && g_Config.m_SvRconModPassword[0] == 0)
{
SendRconLine(ClientID, "No rcon password set on server. Set sv_rcon_password and/or sv_rcon_mod_password to enable the remote console.");
}
else if(g_Config.m_SvRconPassword[0] && str_comp(pPw, g_Config.m_SvRconPassword) == 0)
{
CMsgPacker Msg(NETMSG_RCON_AUTH_STATUS);
Msg.AddInt(1); //authed
Msg.AddInt(1); //cmdlist
SendMsgEx(&Msg, MSGFLAG_VITAL, ClientID, true);
m_aClients[ClientID].m_Authed = AUTHED_ADMIN;
int SendRconCmds = Unpacker.GetInt();
if(Unpacker.Error() == 0 && SendRconCmds)
m_aClients[ClientID].m_pRconCmdToSend = Console()->FirstCommandInfo(IConsole::ACCESS_LEVEL_ADMIN, CFGFLAG_SERVER);
SendRconLine(ClientID, "Admin authentication successful. Full remote console access granted.");
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "ClientID=%d authed (admin)", ClientID);
Console()->Print(IConsole::OUTPUT_LEVEL_STANDARD, "server", aBuf);
}
else if(g_Config.m_SvRconModPassword[0] && str_comp(pPw, g_Config.m_SvRconModPassword) == 0)
{
CMsgPacker Msg(NETMSG_RCON_AUTH_STATUS);
Msg.AddInt(1); //authed
Msg.AddInt(1); //cmdlist
SendMsgEx(&Msg, MSGFLAG_VITAL, ClientID, true);
m_aClients[ClientID].m_Authed = AUTHED_MOD;
int SendRconCmds = Unpacker.GetInt();
if(Unpacker.Error() == 0 && SendRconCmds)
m_aClients[ClientID].m_pRconCmdToSend = Console()->FirstCommandInfo(IConsole::ACCESS_LEVEL_MOD, CFGFLAG_SERVER);
SendRconLine(ClientID, "Moderator authentication successful. Limited remote console access granted.");
char aBuf[256];
str_format(aBuf, sizeof(aBuf), "ClientID=%d authed (moderator)", ClientID);
Console()->Print(IConsole::OUTPUT_LEVEL_STANDARD, "server", aBuf);
}
else if(g_Config.m_SvRconMaxTries)
{
m_aClients[ClientID].m_AuthTries++;
char aBuf[128];
str_format(aBuf, sizeof(aBuf), "Wrong password %d/%d.", m_aClients[ClientID].m_AuthTries, g_Config.m_SvRconMaxTries);
SendRconLine(ClientID, aBuf);
if(m_aClients[ClientID].m_AuthTries >= g_Config.m_SvRconMaxTries)
{
if(!g_Config.m_SvRconBantime)
m_NetServer.Drop(ClientID, "Too many remote console authentication tries");
else
m_ServerBan.BanAddr(m_NetServer.ClientAddr(ClientID), g_Config.m_SvRconBantime*60, "Too many remote console authentication tries");
}
}
else
{
SendRconLine(ClientID, "Wrong password.");
}
}
}
else if(Msg == NETMSG_PING)
{
CMsgPacker Msg(NETMSG_PING_REPLY);
SendMsgEx(&Msg, 0, ClientID, true);
}
else
{
if(g_Config.m_Debug)
{
char aHex[] = "0123456789ABCDEF";
char aBuf[512];
for(int b = 0; b < pPacket->m_DataSize && b < 32; b++)
{
aBuf[b*3] = aHex[((const unsigned char *)pPacket->m_pData)[b]>>4];
aBuf[b*3+1] = aHex[((const unsigned char *)pPacket->m_pData)[b]&0xf];
aBuf[b*3+2] = ' ';
aBuf[b*3+3] = 0;
}
char aBufMsg[256];
str_format(aBufMsg, sizeof(aBufMsg), "strange message ClientID=%d msg=%d data_size=%d", ClientID, Msg, pPacket->m_DataSize);
Console()->Print(IConsole::OUTPUT_LEVEL_DEBUG, "server", aBufMsg);
Console()->Print(IConsole::OUTPUT_LEVEL_DEBUG, "server", aBuf);
}
}
}
void CServer::ProcessClientPacket(CNetChunk *pPacket)
{
int ClientId = pPacket->m_ClientID;
NETADDR Addr;
CUnpacker Unpacker;
Unpacker.Reset(pPacket->m_pData, pPacket->m_DataSize);
// unpack msgid and system flag
int Msg = Unpacker.GetInt();
int Sys = Msg&1;
Msg >>= 1;
if(Unpacker.Error())
return;
if(m_aClients[ClientId].m_State == CClient::STATE_AUTH)
{
if(Sys && Msg == NETMSG_INFO)
{
char aVersion[64];
const char *pPassword;
str_copy(aVersion, Unpacker.GetString(), 64);
if(str_comp(aVersion, GameServer()->NetVersion()) != 0)
{
// OH F**K! wrong version, drop him
char aReason[256];
str_format(aReason, sizeof(aReason), "wrong version. server is running '%s' and client '%s'.", GameServer()->NetVersion(), aVersion);
m_NetServer.Drop(ClientId, aReason);
return;
}
str_copy(m_aClients[ClientId].m_aName, Unpacker.GetString(), MAX_NAME_LENGTH);
str_copy(m_aClients[ClientId].m_aClan, Unpacker.GetString(), MAX_CLANNAME_LENGTH);
pPassword = Unpacker.GetString();
if(g_Config.m_Password[0] != 0 && str_comp(g_Config.m_Password, pPassword) != 0)
{
// wrong password
m_NetServer.Drop(ClientId, "wrong password");
return;
}
m_aClients[ClientId].m_State = CClient::STATE_CONNECTING;
SendMap(ClientId);
}
}
else
{
if(Sys)
{
// system message
if(Msg == NETMSG_REQUEST_MAP_DATA)
{
int Chunk = Unpacker.GetInt();
int ChunkSize = 1024-128;
int Offset = Chunk * ChunkSize;
int Last = 0;
// drop faulty map data requests
if(Chunk < 0 || Offset > m_CurrentMapSize)
return;
if(Offset+ChunkSize >= m_CurrentMapSize)
{
ChunkSize = m_CurrentMapSize-Offset;
if(ChunkSize < 0)
ChunkSize = 0;
Last = 1;
}
CMsgPacker Msg(NETMSG_MAP_DATA);
Msg.AddInt(Last);
Msg.AddInt(m_CurrentMapSize);
Msg.AddInt(ChunkSize);
Msg.AddRaw(&m_pCurrentMapData[Offset], ChunkSize);
SendMsgEx(&Msg, MSGFLAG_VITAL|MSGFLAG_FLUSH, ClientId, true);
if(g_Config.m_Debug)
dbg_msg("server", "sending chunk %d with size %d", Chunk, ChunkSize);
}
else if(Msg == NETMSG_READY)
{
if(m_aClients[ClientId].m_State == CClient::STATE_CONNECTING)
{
Addr = m_NetServer.ClientAddr(ClientId);
dbg_msg("server", "player is ready. ClientId=%x ip=%d.%d.%d.%d",
ClientId, Addr.ip[0], Addr.ip[1], Addr.ip[2], Addr.ip[3]);
m_aClients[ClientId].m_State = CClient::STATE_READY;
GameServer()->OnClientConnected(ClientId);
}
}
else if(Msg == NETMSG_ENTERGAME)
{
if(m_aClients[ClientId].m_State == CClient::STATE_READY)
{
Addr = m_NetServer.ClientAddr(ClientId);
dbg_msg("server", "player has entered the game. ClientId=%x ip=%d.%d.%d.%d",
ClientId, Addr.ip[0], Addr.ip[1], Addr.ip[2], Addr.ip[3]);
m_aClients[ClientId].m_State = CClient::STATE_INGAME;
GameServer()->OnClientEnter(ClientId);
}
}
else if(Msg == NETMSG_INPUT)
{
CClient::CInput *pInput;
int64 TagTime;
m_aClients[ClientId].m_LastAckedSnapshot = Unpacker.GetInt();
int IntendedTick = Unpacker.GetInt();
int Size = Unpacker.GetInt();
// check for errors
if(Unpacker.Error() || Size/4 > MAX_INPUT_SIZE)
return;
if(m_aClients[ClientId].m_LastAckedSnapshot > 0)
m_aClients[ClientId].m_SnapRate = CClient::SNAPRATE_FULL;
if(m_aClients[ClientId].m_Snapshots.Get(m_aClients[ClientId].m_LastAckedSnapshot, &TagTime, 0, 0) >= 0)
m_aClients[ClientId].m_Latency = (int)(((time_get()-TagTime)*1000)/time_freq());
// add message to report the input timing
// skip packets that are old
if(IntendedTick > m_aClients[ClientId].m_LastInputTick)
{
int TimeLeft = ((TickStartTime(IntendedTick)-time_get())*1000) / time_freq();
CMsgPacker Msg(NETMSG_INPUTTIMING);
Msg.AddInt(IntendedTick);
Msg.AddInt(TimeLeft);
SendMsgEx(&Msg, 0, ClientId, true);
}
m_aClients[ClientId].m_LastInputTick = IntendedTick;
pInput = &m_aClients[ClientId].m_aInputs[m_aClients[ClientId].m_CurrentInput];
if(IntendedTick <= Tick())
IntendedTick = Tick()+1;
pInput->m_GameTick = IntendedTick;
for(int i = 0; i < Size/4; i++)
pInput->m_aData[i] = Unpacker.GetInt();
mem_copy(m_aClients[ClientId].m_LatestInput.m_aData, pInput->m_aData, MAX_INPUT_SIZE*sizeof(int));
m_aClients[ClientId].m_CurrentInput++;
m_aClients[ClientId].m_CurrentInput %= 200;
// call the mod with the fresh input data
if(m_aClients[ClientId].m_State == CClient::STATE_INGAME)
GameServer()->OnClientDirectInput(ClientId, m_aClients[ClientId].m_LatestInput.m_aData);
}
else if(Msg == NETMSG_RCON_CMD)
{
const char *pCmd = Unpacker.GetString();
if(Unpacker.Error() == 0 && m_aClients[ClientId].m_Authed)
{
dbg_msg("server", "ClientId=%d rcon='%s'", ClientId, pCmd);
Console()->ExecuteLine(pCmd);
}
}
else if(Msg == NETMSG_RCON_AUTH)
{
const char *pPw;
Unpacker.GetString(); // login name, not used
pPw = Unpacker.GetString();
if(Unpacker.Error() == 0)
{
if(g_Config.m_SvRconPassword[0] == 0)
{
SendRconLine(ClientId, "No rcon password set on server. Set sv_rcon_password to enable the remote console.");
}
else if(str_comp(pPw, g_Config.m_SvRconPassword) == 0)
{
CMsgPacker Msg(NETMSG_RCON_AUTH_STATUS);
Msg.AddInt(1);
SendMsgEx(&Msg, MSGFLAG_VITAL, ClientId, true);
m_aClients[ClientId].m_Authed = 1;
SendRconLine(ClientId, "Authentication successful. Remote console access granted.");
dbg_msg("server", "ClientId=%d authed", ClientId);
}
else
{
SendRconLine(ClientId, "Wrong password.");
}
}
}
else if(Msg == NETMSG_PING)
{
CMsgPacker Msg(NETMSG_PING_REPLY);
SendMsgEx(&Msg, 0, ClientId, true);
}
else
{
char aHex[] = "0123456789ABCDEF";
char aBuf[512];
for(int b = 0; b < pPacket->m_DataSize && b < 32; b++)
{
aBuf[b*3] = aHex[((const unsigned char *)pPacket->m_pData)[b]>>4];
aBuf[b*3+1] = aHex[((const unsigned char *)pPacket->m_pData)[b]&0xf];
aBuf[b*3+2] = ' ';
aBuf[b*3+3] = 0;
}
dbg_msg("server", "strange message ClientId=%d msg=%d data_size=%d", ClientId, Msg, pPacket->m_DataSize);
dbg_msg("server", "%s", aBuf);
}
}
else
{
// game message
if(m_aClients[ClientId].m_State >= CClient::STATE_READY)
GameServer()->OnMessage(Msg, &Unpacker, ClientId);
}
}