mirror of
https://github.com/ddnet/ddnet.git
synced 2024-11-11 02:28:18 +00:00
290 lines
8.2 KiB
C++
290 lines
8.2 KiB
C++
/* (c) Magnus Auvinen. See licence.txt in the root of the distribution for more information. */
|
|
/* If you are missing that file, acquire a complete release at teeworlds.com. */
|
|
#include <base/system.h>
|
|
#include <engine/shared/network.h>
|
|
#include <engine/shared/config.h>
|
|
#include <engine/console.h>
|
|
#include <engine/masterserver.h>
|
|
|
|
#include <mastersrv/mastersrv.h>
|
|
|
|
#include "register.h"
|
|
|
|
CRegister::CRegister()
|
|
{
|
|
m_pNetServer = 0;
|
|
m_pMasterServer = 0;
|
|
m_pConsole = 0;
|
|
|
|
m_RegisterState = REGISTERSTATE_START;
|
|
m_RegisterStateStart = 0;
|
|
m_RegisterFirst = 1;
|
|
m_RegisterCount = 0;
|
|
|
|
mem_zero(m_aMasterserverInfo, sizeof(m_aMasterserverInfo));
|
|
m_RegisterRegisteredServer = -1;
|
|
}
|
|
|
|
void CRegister::RegisterNewState(int State)
|
|
{
|
|
m_RegisterState = State;
|
|
m_RegisterStateStart = time_get();
|
|
}
|
|
|
|
void CRegister::RegisterSendFwcheckresponse(NETADDR *pAddr)
|
|
{
|
|
CNetChunk Packet;
|
|
Packet.m_ClientID = -1;
|
|
Packet.m_Address = *pAddr;
|
|
Packet.m_Flags = NETSENDFLAG_CONNLESS;
|
|
Packet.m_DataSize = sizeof(SERVERBROWSE_FWRESPONSE);
|
|
Packet.m_pData = SERVERBROWSE_FWRESPONSE;
|
|
m_pNetServer->Send(&Packet);
|
|
}
|
|
|
|
void CRegister::RegisterSendHeartbeat(NETADDR Addr)
|
|
{
|
|
static unsigned char aData[sizeof(SERVERBROWSE_HEARTBEAT) + 2];
|
|
unsigned short Port = g_Config.m_SvPort;
|
|
CNetChunk Packet;
|
|
|
|
mem_copy(aData, SERVERBROWSE_HEARTBEAT, sizeof(SERVERBROWSE_HEARTBEAT));
|
|
|
|
Packet.m_ClientID = -1;
|
|
Packet.m_Address = Addr;
|
|
Packet.m_Flags = NETSENDFLAG_CONNLESS;
|
|
Packet.m_DataSize = sizeof(SERVERBROWSE_HEARTBEAT) + 2;
|
|
Packet.m_pData = &aData;
|
|
|
|
// supply the set port that the master can use if it has problems
|
|
if(g_Config.m_SvExternalPort)
|
|
Port = g_Config.m_SvExternalPort;
|
|
aData[sizeof(SERVERBROWSE_HEARTBEAT)] = Port >> 8;
|
|
aData[sizeof(SERVERBROWSE_HEARTBEAT)+1] = Port&0xff;
|
|
m_pNetServer->Send(&Packet);
|
|
}
|
|
|
|
void CRegister::RegisterSendCountRequest(NETADDR Addr)
|
|
{
|
|
CNetChunk Packet;
|
|
Packet.m_ClientID = -1;
|
|
Packet.m_Address = Addr;
|
|
Packet.m_Flags = NETSENDFLAG_CONNLESS;
|
|
Packet.m_DataSize = sizeof(SERVERBROWSE_GETCOUNT);
|
|
Packet.m_pData = SERVERBROWSE_GETCOUNT;
|
|
m_pNetServer->Send(&Packet);
|
|
}
|
|
|
|
void CRegister::RegisterGotCount(CNetChunk *pChunk)
|
|
{
|
|
unsigned char *pData = (unsigned char *)pChunk->m_pData;
|
|
int Count = (pData[sizeof(SERVERBROWSE_COUNT)]<<8) | pData[sizeof(SERVERBROWSE_COUNT)+1];
|
|
|
|
for(int i = 0; i < IMasterServer::MAX_MASTERSERVERS; i++)
|
|
{
|
|
if(net_addr_comp(&m_aMasterserverInfo[i].m_Addr, &pChunk->m_Address) == 0)
|
|
{
|
|
m_aMasterserverInfo[i].m_Count = Count;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void CRegister::Init(CNetServer *pNetServer, IEngineMasterServer *pMasterServer, IConsole *pConsole)
|
|
{
|
|
m_pNetServer = pNetServer;
|
|
m_pMasterServer = pMasterServer;
|
|
m_pConsole = pConsole;
|
|
}
|
|
|
|
void CRegister::RegisterUpdate(int Nettype)
|
|
{
|
|
int64 Now = time_get();
|
|
int64 Freq = time_freq();
|
|
|
|
if(!g_Config.m_SvRegister)
|
|
return;
|
|
|
|
m_pMasterServer->Update();
|
|
|
|
if(m_RegisterState == REGISTERSTATE_START)
|
|
{
|
|
m_RegisterCount = 0;
|
|
m_RegisterFirst = 1;
|
|
RegisterNewState(REGISTERSTATE_UPDATE_ADDRS);
|
|
m_pMasterServer->RefreshAddresses(Nettype);
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "refreshing ip addresses");
|
|
}
|
|
else if(m_RegisterState == REGISTERSTATE_UPDATE_ADDRS)
|
|
{
|
|
m_RegisterRegisteredServer = -1;
|
|
|
|
if(!m_pMasterServer->IsRefreshing())
|
|
{
|
|
int i;
|
|
for(i = 0; i < IMasterServer::MAX_MASTERSERVERS; i++)
|
|
{
|
|
if(!m_pMasterServer->IsValid(i))
|
|
{
|
|
m_aMasterserverInfo[i].m_Valid = 0;
|
|
m_aMasterserverInfo[i].m_Count = 0;
|
|
continue;
|
|
}
|
|
|
|
NETADDR Addr = m_pMasterServer->GetAddr(i);
|
|
m_aMasterserverInfo[i].m_Addr = Addr;
|
|
m_aMasterserverInfo[i].m_Valid = 1;
|
|
m_aMasterserverInfo[i].m_Count = -1;
|
|
m_aMasterserverInfo[i].m_LastSend = 0;
|
|
}
|
|
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "fetching server counts");
|
|
RegisterNewState(REGISTERSTATE_QUERY_COUNT);
|
|
}
|
|
}
|
|
else if(m_RegisterState == REGISTERSTATE_QUERY_COUNT)
|
|
{
|
|
int Left = 0;
|
|
for(int i = 0; i < IMasterServer::MAX_MASTERSERVERS; i++)
|
|
{
|
|
if(!m_aMasterserverInfo[i].m_Valid)
|
|
continue;
|
|
|
|
if(m_aMasterserverInfo[i].m_Count == -1)
|
|
{
|
|
Left++;
|
|
if(m_aMasterserverInfo[i].m_LastSend+Freq < Now)
|
|
{
|
|
m_aMasterserverInfo[i].m_LastSend = Now;
|
|
RegisterSendCountRequest(m_aMasterserverInfo[i].m_Addr);
|
|
}
|
|
}
|
|
}
|
|
|
|
// check if we are done or timed out
|
|
if(Left == 0 || Now > m_RegisterStateStart+Freq*3)
|
|
{
|
|
// choose server
|
|
int Best = -1;
|
|
int i;
|
|
for(i = 0; i < IMasterServer::MAX_MASTERSERVERS; i++)
|
|
{
|
|
if(!m_aMasterserverInfo[i].m_Valid || m_aMasterserverInfo[i].m_Count == -1)
|
|
continue;
|
|
|
|
if(Best == -1 || m_aMasterserverInfo[i].m_Count < m_aMasterserverInfo[Best].m_Count)
|
|
Best = i;
|
|
}
|
|
|
|
// server chosen
|
|
m_RegisterRegisteredServer = Best;
|
|
if(m_RegisterRegisteredServer == -1)
|
|
{
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "WARNING: No master servers. Retrying in 60 seconds");
|
|
RegisterNewState(REGISTERSTATE_ERROR);
|
|
}
|
|
else
|
|
{
|
|
char aBuf[256];
|
|
str_format(aBuf, sizeof(aBuf), "chose '%s' as master, sending heartbeats", m_pMasterServer->GetName(m_RegisterRegisteredServer));
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", aBuf);
|
|
m_aMasterserverInfo[m_RegisterRegisteredServer].m_LastSend = 0;
|
|
RegisterNewState(REGISTERSTATE_HEARTBEAT);
|
|
}
|
|
}
|
|
}
|
|
else if(m_RegisterState == REGISTERSTATE_HEARTBEAT)
|
|
{
|
|
// check if we should send heartbeat
|
|
if(Now > m_aMasterserverInfo[m_RegisterRegisteredServer].m_LastSend+Freq*15)
|
|
{
|
|
m_aMasterserverInfo[m_RegisterRegisteredServer].m_LastSend = Now;
|
|
RegisterSendHeartbeat(m_aMasterserverInfo[m_RegisterRegisteredServer].m_Addr);
|
|
}
|
|
|
|
if(Now > m_RegisterStateStart+Freq*60)
|
|
{
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "WARNING: Master server is not responding, switching master");
|
|
RegisterNewState(REGISTERSTATE_START);
|
|
}
|
|
}
|
|
else if(m_RegisterState == REGISTERSTATE_REGISTERED)
|
|
{
|
|
if(m_RegisterFirst)
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "server registered");
|
|
|
|
m_RegisterFirst = 0;
|
|
|
|
// check if we should send new heartbeat again
|
|
if(Now > m_RegisterStateStart+Freq)
|
|
{
|
|
if(m_RegisterCount == 120) // redo the whole process after 60 minutes to balance out the master servers
|
|
RegisterNewState(REGISTERSTATE_START);
|
|
else
|
|
{
|
|
m_RegisterCount++;
|
|
RegisterNewState(REGISTERSTATE_HEARTBEAT);
|
|
}
|
|
}
|
|
}
|
|
else if(m_RegisterState == REGISTERSTATE_ERROR)
|
|
{
|
|
// check for restart
|
|
if(Now > m_RegisterStateStart+Freq*60)
|
|
RegisterNewState(REGISTERSTATE_START);
|
|
}
|
|
}
|
|
|
|
int CRegister::RegisterProcessPacket(CNetChunk *pPacket)
|
|
{
|
|
// check for masterserver address
|
|
bool Valid = false;
|
|
NETADDR Addr1 = pPacket->m_Address;
|
|
Addr1.port = 0;
|
|
for(int i = 0; i < IMasterServer::MAX_MASTERSERVERS; i++)
|
|
{
|
|
NETADDR Addr2 = m_aMasterserverInfo[i].m_Addr;
|
|
Addr2.port = 0;
|
|
if(net_addr_comp(&Addr1, &Addr2) == 0)
|
|
{
|
|
Valid = true;
|
|
break;
|
|
}
|
|
}
|
|
if(!Valid)
|
|
return 0;
|
|
|
|
if(pPacket->m_DataSize == sizeof(SERVERBROWSE_FWCHECK) &&
|
|
mem_comp(pPacket->m_pData, SERVERBROWSE_FWCHECK, sizeof(SERVERBROWSE_FWCHECK)) == 0)
|
|
{
|
|
RegisterSendFwcheckresponse(&pPacket->m_Address);
|
|
return 1;
|
|
}
|
|
else if(pPacket->m_DataSize == sizeof(SERVERBROWSE_FWOK) &&
|
|
mem_comp(pPacket->m_pData, SERVERBROWSE_FWOK, sizeof(SERVERBROWSE_FWOK)) == 0)
|
|
{
|
|
if(m_RegisterFirst)
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "no firewall/nat problems detected");
|
|
RegisterNewState(REGISTERSTATE_REGISTERED);
|
|
return 1;
|
|
}
|
|
else if(pPacket->m_DataSize == sizeof(SERVERBROWSE_FWERROR) &&
|
|
mem_comp(pPacket->m_pData, SERVERBROWSE_FWERROR, sizeof(SERVERBROWSE_FWERROR)) == 0)
|
|
{
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", "ERROR: the master server reports that clients can not connect to this server.");
|
|
char aBuf[256];
|
|
str_format(aBuf, sizeof(aBuf), "ERROR: configure your firewall/nat to let through udp on port %d.", g_Config.m_SvPort);
|
|
m_pConsole->Print(IConsole::OUTPUT_LEVEL_STANDARD, "register", aBuf);
|
|
RegisterNewState(REGISTERSTATE_ERROR);
|
|
return 1;
|
|
}
|
|
else if(pPacket->m_DataSize == sizeof(SERVERBROWSE_COUNT)+2 &&
|
|
mem_comp(pPacket->m_pData, SERVERBROWSE_COUNT, sizeof(SERVERBROWSE_COUNT)) == 0)
|
|
{
|
|
RegisterGotCount(pPacket);
|
|
return 1;
|
|
}
|
|
|
|
return 0;
|
|
}
|