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cuberite-2a/source/Server.cpp

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// ReDucTor is an awesome guy who helped me a lot
#include "Globals.h" // NOTE: MSVC stupidness requires this to be the same across all modules
#include "Server.h"
#include "ClientHandle.h"
#include "OSSupport/Timer.h"
#include "Mobs/Monster.h"
#include "OSSupport/Socket.h"
#include "Root.h"
#include "World.h"
#include "ChunkDef.h"
#include "PluginManager.h"
#include "GroupManager.h"
#include "ChatColor.h"
#include "Player.h"
#include "Inventory.h"
#include "Item.h"
#include "FurnaceRecipe.h"
#include "Tracer.h"
#include "WebAdmin.h"
#include "Protocol/ProtocolRecognizer.h"
#include "MersenneTwister.h"
#include "../iniFile/iniFile.h"
#include "Vector3f.h"
#include <fstream>
#include <sstream>
#include <iostream>
extern "C" {
#include "zlib.h"
}
bool g_bWaterPhysics = false;
typedef std::list< cClientHandle* > ClientList;
struct cServer::sServerState
{
sServerState()
: pListenThread( 0 )
, pTickThread( 0 )
, bStopListenThread( false )
, bStopTickThread( false )
{}
cSocket SListenClient; // socket listening for client calls
cThread* pListenThread; bool bStopListenThread;
cThread* pTickThread; bool bStopTickThread;
cEvent RestartEvent;
std::string ServerID;
};
cServer * cServer::GetServer()
{
LOGWARN("WARNING: Using deprecated function cServer::GetServer() use cRoot::Get()->GetServer() instead!");
return cRoot::Get()->GetServer();
}
void cServer::ServerListenThread( void *a_Args )
{
LOG("ServerListenThread");
cServer* self = (cServer*)a_Args;
sServerState* m_pState = self->m_pState;
while( !m_pState->bStopListenThread )
{
self->StartListenClient();
}
}
void cServer::ClientDestroying(const cClientHandle * a_Client)
{
m_SocketThreads.StopReading(a_Client);
}
void cServer::NotifyClientWrite(const cClientHandle * a_Client)
{
m_NotifyWriteThread.NotifyClientWrite(a_Client);
}
void cServer::WriteToClient(const cClientHandle * a_Client, const AString & a_Data)
{
m_SocketThreads.Write(a_Client, a_Data);
}
void cServer::QueueClientClose(const cClientHandle * a_Client)
{
m_SocketThreads.QueueClose(a_Client);
}
void cServer::RemoveClient(const cClientHandle * a_Client)
{
m_SocketThreads.RemoveClient(a_Client);
}
bool cServer::InitServer( int a_Port )
{
if( m_bIsConnected )
{
LOGERROR("ERROR: Trying to initialize server while server is already running!");
return false;
}
printf("/============================\\\n");
printf("| Custom Minecraft Server |\n");
printf("| Created by Kevin Bansberg |\n");
printf("| A.K.A. FakeTruth |\n");
printf("| Monsters by Alex Sonek |\n");
printf("| A.K.A. Duralex |\n");
printf("| Stuff by Mattes D |\n");
printf("| A.K.A. _Xoft(o) |\n");
printf("\\============================/\n");
printf("More info: WWW.MC-SERVER.ORG\n");
printf(" WWW.AE-C.NET\n");
printf(" WWW.RBTHINKTANK.COM\n");
printf("email: faketruth@gmail.com\n\n");
LOG("Starting up server.");
LOGINFO("Compatible clients: %s, protocol versions %s", MCS_CLIENT_VERSIONS, MCS_PROTOCOL_VERSIONS);
if( cSocket::WSAStartup() != 0 ) // Only does anything on Windows, but whatever
{
LOGERROR("WSAStartup() != 0");
return false;
}
m_pState->SListenClient = cSocket::CreateSocket();
if( !m_pState->SListenClient.IsValid() )
{
LOGERROR("m_SListenClient==INVALID_SOCKET (%s)", cSocket::GetErrorString( cSocket::GetLastError() ).c_str() );
return false;
}
if( m_pState->SListenClient.SetReuseAddress() == -1 )
{
LOGERROR("setsockopt == -1");
return false;
}
cSocket::SockAddr_In local;
local.Family = cSocket::ADDRESS_FAMILY_INTERNET;
local.Address = cSocket::INTERNET_ADDRESS_ANY;
local.Port = (unsigned short)a_Port; // 25565
if( m_pState->SListenClient.Bind( local ) != 0 )
{
LOGERROR("bind fail (%s)", cSocket::GetErrorString( cSocket::GetLastError() ).c_str() );
return false;
}
if( m_pState->SListenClient.Listen( 10 ) != 0)
{
LOGERROR("listen fail (%s)", cSocket::GetErrorString( cSocket::GetLastError() ).c_str() );
return false;
}
m_iServerPort = a_Port;
LOG("Port %i has been bound, server is open for connections", m_iServerPort);
m_bIsConnected = true;
cIniFile IniFile("settings.ini");
if (IniFile.ReadFile())
{
g_bWaterPhysics = IniFile.GetValueB("Physics", "Water", false );
m_pState->ServerID = "-";
if (IniFile.GetValueB("Authentication", "Authenticate"))
{
MTRand mtrand1;
unsigned int r1 = (mtrand1.randInt()%1147483647) + 1000000000;
unsigned int r2 = (mtrand1.randInt()%1147483647) + 1000000000;
std::ostringstream sid;
sid << std::hex << r1;
sid << std::hex << r2;
std::string ServerID = sid.str();
ServerID.resize(16, '0');
m_pState->ServerID = ServerID;
}
m_ClientViewDistance = IniFile.GetValueSetI("Server", "DefaultViewDistance", cClientHandle::DEFAULT_VIEW_DISTANCE);
if (m_ClientViewDistance < cClientHandle::MIN_VIEW_DISTANCE)
{
m_ClientViewDistance = cClientHandle::MIN_VIEW_DISTANCE;
LOGINFO("Setting default viewdistance to the minimum of %d", m_ClientViewDistance);
}
if (m_ClientViewDistance > cClientHandle::MAX_VIEW_DISTANCE)
{
m_ClientViewDistance = cClientHandle::MAX_VIEW_DISTANCE;
LOGINFO("Setting default viewdistance to the maximum of %d", m_ClientViewDistance);
}
IniFile.WriteFile();
}
m_NotifyWriteThread.Start(this);
PrepareKeys();
return true;
}
cServer::cServer()
: m_pState( new sServerState )
, m_Millisecondsf( 0 )
, m_Milliseconds( 0 )
, m_bIsConnected( false )
, m_iServerPort( 0 )
, m_bRestarting( false )
{
}
cServer::~cServer()
{
// TODO: Shut down the server gracefully
if ( m_pState->SListenClient )
{
m_pState->SListenClient.CloseSocket();
}
m_pState->SListenClient = 0;
m_pState->bStopListenThread = true;
delete m_pState->pListenThread; m_pState->pListenThread = NULL;
m_pState->bStopTickThread = true;
delete m_pState->pTickThread; m_pState->pTickThread = NULL;
delete m_pState;
}
void cServer::PrepareKeys(void)
{
// TODO: Save and load key for persistence across sessions
// But generating the key takes only a moment, do we even need that?
LOG("Generating protocol encryption keypair...");
time_t CurTime = time(NULL);
CryptoPP::RandomPool rng;
rng.Put((const byte *)&CurTime, sizeof(CurTime));
m_PrivateKey.GenerateRandomWithKeySize(rng, 1024);
CryptoPP::RSA::PublicKey pk(m_PrivateKey);
m_PublicKey = pk;
}
void cServer::BroadcastChat(const AString & a_Message, const cClientHandle * a_Exclude)
{
cCSLock Lock(m_CSClients);
for (ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
{
if ((*itr == a_Exclude) || !(*itr)->IsLoggedIn())
{
continue;
}
(*itr)->SendChat(a_Message);
}
}
void cServer::StartListenClient()
{
cSocket SClient = m_pState->SListenClient.Accept();
if (!SClient.IsValid())
{
return;
}
const AString & ClientIP = SClient.GetIPString();
if (ClientIP.empty())
{
LOGWARN("cServer: A client connected, but didn't present its IP, disconnecting.");
SClient.CloseSocket();
return;
}
LOG("Client \"%s\" connected!", ClientIP.c_str());
cClientHandle * NewHandle = new cClientHandle(&SClient, m_ClientViewDistance);
if (!m_SocketThreads.AddClient(SClient, NewHandle))
{
// For some reason SocketThreads have rejected the handle, clean it up
LOGERROR("Client \"%s\" cannot be handled, server probably unstable", SClient.GetIPString().c_str());
SClient.CloseSocket();
delete NewHandle;
return;
}
cCSLock Lock(m_CSClients);
m_Clients.push_back( NewHandle );
}
bool cServer::Tick(float a_Dt)
{
//LOG("1. Tick %0.2f", a_Dt);
if( a_Dt > 100.f ) a_Dt = 100.f; // Don't go over 1/10 second
m_Millisecondsf += a_Dt;
if( m_Millisecondsf > 1.f )
{
m_Milliseconds += (int)m_Millisecondsf;
m_Millisecondsf = m_Millisecondsf - (int)m_Millisecondsf;
}
cRoot::Get()->TickWorlds( a_Dt ); // TODO - Maybe give all worlds their own thread?
cClientHandleList RemoveClients;
{
cCSLock Lock(m_CSClients);
for (cClientHandleList::iterator itr = m_Clients.begin(); itr != m_Clients.end();)
{
if ((*itr)->IsDestroyed())
{
RemoveClients.push_back(*itr); // Remove the client later, when CS is not held, to avoid deadlock ( http://forum.mc-server.org/showthread.php?tid=374 )
itr = m_Clients.erase(itr);
continue;
}
(*itr)->Tick(a_Dt);
++itr;
} // for itr - m_Clients[]
}
for (cClientHandleList::iterator itr = RemoveClients.begin(); itr != RemoveClients.end(); ++itr)
{
delete *itr;
} // for itr - RemoveClients[]
cRoot::Get()->GetPluginManager()->Tick( a_Dt );
if( !m_bRestarting )
{
return true;
}
else
{
m_bRestarting = false;
m_pState->RestartEvent.Set();
return false;
}
}
void ServerTickThread( void * a_Param )
{
LOG("ServerTickThread");
cServer *CServerObj = (cServer*)a_Param;
cTimer Timer;
long long msPerTick = 50; // TODO - Put this in server config file
long long LastTime = Timer.GetNowTime();
bool bKeepGoing = true;
while( bKeepGoing )
{
long long NowTime = Timer.GetNowTime();
float DeltaTime = (float)(NowTime-LastTime);
bKeepGoing = CServerObj->Tick( DeltaTime );
long long TickTime = Timer.GetNowTime() - NowTime;
if( TickTime < msPerTick ) // Stretch tick time until it's at least msPerTick
{
cSleep::MilliSleep( (unsigned int)( msPerTick - TickTime ) );
}
LastTime = NowTime;
}
LOG("TICK THREAD STOPPED");
}
void cServer::StartListenThread()
{
m_pState->pListenThread = new cThread( ServerListenThread, this, "cServer::ServerListenThread" );
m_pState->pTickThread = new cThread( ServerTickThread, this, "cServer::ServerTickThread" );
m_pState->pListenThread->Start( true );
m_pState->pTickThread->Start( true );
}
bool cServer::Command(cClientHandle & a_Client, const AString & a_Cmd)
{
return cRoot::Get()->GetPluginManager()->CallHookChat(a_Client.GetPlayer(), a_Cmd);
}
void cServer::ServerCommand(const AString & a_Cmd)
{
AStringVector split = StringSplit(a_Cmd, " ");
if (split.empty())
{
return;
}
if (split[0].compare( "help" ) == 0)
{
printf("================== ALL COMMANDS ===================\n");
printf("help - Shows this message\n");
printf("save-all - Saves all loaded chunks to disk\n");
printf("list - Lists all players currently in server\n");
printf("unload - Unloads all unused chunks\n");
printf("numchunks - Shows number of chunks currently loaded\n");
printf("chunkstats - Shows chunks statistics\n");
printf("say - Sends a chat message to all players\n");
printf("restart - Kicks all clients, and saves everything\n");
printf(" and clears memory\n");
printf("stop - Saves everything and closes server\n");
printf("===================================================\n");
return;
}
if ((split[0].compare("stop") == 0) || (split[0].compare("restart") == 0))
{
return;
}
if (split[0].compare("save-all") == 0)
{
cRoot::Get()->SaveAllChunks();
return;
}
if (split[0].compare("unload") == 0)
{
LOG("Num loaded chunks before: %i", cRoot::Get()->GetTotalChunkCount() );
cRoot::Get()->GetDefaultWorld()->UnloadUnusedChunks(); // TODO: Iterate through ALL worlds
LOG("Num loaded chunks after: %i", cRoot::Get()->GetTotalChunkCount() );
return;
}
if (split[0].compare("list") == 0)
{
class cPlayerLogger : public cPlayerListCallback
{
virtual bool Item(cPlayer * a_Player) override
{
LOG("\t%s @ %s", a_Player->GetName().c_str(), a_Player->GetClientHandle()->GetIPString().c_str());
return false;
}
} Logger;
cRoot::Get()->ForEachPlayer(Logger);
return;
}
if (split[0].compare("numchunks") == 0)
{
LOG("Num loaded chunks: %i", cRoot::Get()->GetTotalChunkCount() );
return;
}
if (split[0].compare("chunkstats") == 0)
{
cRoot::Get()->LogChunkStats();
return;
}
if (split[0].compare("monsters") == 0)
{
// TODO: cWorld::ListMonsters();
return;
}
if (split.size() > 1)
{
if (split[0].compare("say") == 0)
{
AString ToSay = a_Cmd.substr(a_Cmd.find_first_of("say") + 4);
AString Message = cChatColor::Purple + "[SERVER] " + ToSay;
LOG("[SERVER]: %s", ToSay.c_str());
BroadcastChat(Message);
return;
}
}
printf("Unknown command, type 'help' for all commands.\n");
// LOG("You didn't enter anything? (%s)", a_Cmd.c_str() );
}
void cServer::SendMessage(const AString & a_Message, cPlayer * a_Player /* = NULL */, bool a_bExclude /* = false */ )
{
if ((a_Player != NULL) && !a_bExclude)
{
cClientHandle * Client = a_Player->GetClientHandle();
if (Client != NULL)
{
Client->SendChat(a_Message);
}
return;
}
BroadcastChat(a_Message, (a_Player != NULL) ? a_Player->GetClientHandle() : NULL);
}
void cServer::Shutdown()
{
m_bRestarting = true;
m_pState->RestartEvent.Wait();
cRoot::Get()->SaveAllChunks();
cCSLock Lock(m_CSClients);
for( ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr )
{
(*itr)->Destroy();
delete *itr;
}
m_Clients.clear();
}
const AString & cServer::GetServerID(void) const
{
return m_pState->ServerID;
}
void cServer::KickUser(int a_ClientID, const AString & a_Reason)
{
cCSLock Lock(m_CSClients);
for (ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
{
if ((*itr)->GetUniqueID() == a_ClientID)
{
(*itr)->Kick(a_Reason);
}
} // for itr - m_Clients[]
}
void cServer::AuthenticateUser(int a_ClientID)
{
cCSLock Lock(m_CSClients);
for (ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
{
if ((*itr)->GetUniqueID() == a_ClientID)
{
(*itr)->Authenticate();
}
} // for itr - m_Clients[]
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cServer::cClientPacketThread:
cServer::cNotifyWriteThread::cNotifyWriteThread(void) :
super("ClientPacketThread"),
m_Server(NULL)
{
}
cServer::cNotifyWriteThread::~cNotifyWriteThread()
{
m_ShouldTerminate = true;
m_Event.Set();
Wait();
}
bool cServer::cNotifyWriteThread::Start(cServer * a_Server)
{
m_Server = a_Server;
return super::Start();
}
void cServer::cNotifyWriteThread::Execute(void)
{
cClientHandleList Clients;
while (!m_ShouldTerminate)
{
cCSLock Lock(m_CS);
while (m_Clients.size() == 0)
{
cCSUnlock Unlock(Lock);
m_Event.Wait();
if (m_ShouldTerminate)
{
return;
}
}
// Copy the clients to notify and unlock the CS:
Clients.splice(Clients.begin(), m_Clients);
Lock.Unlock();
for (cClientHandleList::iterator itr = Clients.begin(); itr != Clients.end(); ++itr)
{
m_Server->m_SocketThreads.NotifyWrite(*itr);
} // for itr - Clients[]
Clients.clear();
} // while (!mShouldTerminate)
}
void cServer::cNotifyWriteThread::NotifyClientWrite(const cClientHandle * a_Client)
{
{
cCSLock Lock(m_CS);
m_Clients.remove(const_cast<cClientHandle *>(a_Client)); // Put it there only once
m_Clients.push_back(const_cast<cClientHandle *>(a_Client));
}
m_Event.Set();
}