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cuberite-2a/source/cServer.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 "cServer.h"
#include "cClientHandle.h"
#include "cSleep.h"
#include "cTimer.h"
#include "cMonster.h"
#include "cSocket.h"
#include "cRoot.h"
#include "cWorld.h"
#include "cChunk.h"
#include "cPluginManager.h"
#include "cGroupManager.h"
#include "cChatColor.h"
#include "cPlayer.h"
#include "cInventory.h"
#include "cItem.h"
#include "cRecipeChecker.h"
#include "cFurnaceRecipe.h"
#include "cTracer.h"
#include "cWebAdmin.h"
#include "MersenneTwister.h"
#include "../iniFile/iniFile.h"
#include "Vector3f.h"
#include "packets/cPacket_Chat.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 cSocket * a_Socket, const AString & a_Data)
{
m_SocketThreads.Write(a_Socket, a_Data);
}
void cServer::QueueClientClose(const cSocket * a_Socket)
{
m_SocketThreads.QueueClose(a_Socket);
}
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. |\n");
printf("| FakeTruth |\n");
printf("| Monsters by Alex Sonek |\n");
printf("| A.K.A. Duralex |\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.");
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.GetValueI("Server", "DefaultViewDistance", -1);
if (m_ClientViewDistance == -1)
{
m_ClientViewDistance = cClientHandle::DEFAULT_VIEW_DISTANCE;
LOG("[Server].DefaultViewDistance not set, using a default of %d", m_ClientViewDistance);
}
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);
}
}
m_NotifyWriteThread.Start(this);
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()
{
if( m_pState->SListenClient ) m_pState->SListenClient.CloseSocket();
m_pState->SListenClient = 0;
m_pState->bStopListenThread = true;
delete m_pState->pListenThread; m_pState->pListenThread = 0;
m_pState->bStopTickThread = true;
delete m_pState->pTickThread; m_pState->pTickThread = 0;
delete m_pState;
}
// TODO - Need to modify this or something, so it broadcasts to all worlds? And move this to cWorld?
void cServer::Broadcast( const cPacket * a_Packet, cClientHandle* a_Exclude /* = 0 */ )
{
cCSLock Lock(m_CSClients);
for( ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
{
if ((*itr == a_Exclude) || !(*itr)->IsLoggedIn())
{
continue;
}
(*itr)->Send( a_Packet );
}
}
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(&(NewHandle->GetSocket()), 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?
{
cCSLock Lock(m_CSClients);
for (cClientHandleList::iterator itr = m_Clients.begin(); itr != m_Clients.end();)
{
if ((*itr)->IsDestroyed())
{
cClientHandle* RemoveMe = *itr;
itr = m_Clients.erase(itr);
delete RemoveMe;
continue;
}
(*itr)->Tick(a_Dt);
++itr;
}
}
cRoot::Get()->GetPluginManager()->Tick( a_Dt );
if( !m_bRestarting )
return true;
else
{
m_bRestarting = false;
m_pState->RestartEvent.Set();
LOG("<<<<>>>>SIGNALLED SEMAPHORE");
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 );
}
template <class T>
bool from_string(
T& t,
const std::string& s,
std::ios_base& (*f)(std::ios_base&)
)
{
std::istringstream iss(s);
return !(iss >> f >> t).fail();
}
bool cServer::Command( cClientHandle & a_Client, const char* a_Cmd )
{
cPluginManager* PM = cRoot::Get()->GetPluginManager();
if( PM->CallHook( cPluginManager::E_PLUGIN_CHAT, 2, a_Cmd, a_Client.GetPlayer() ) )
{
return true;
}
std::string Command( a_Cmd );
if( Command.length() <= 0 ) return false;
if( Command[0] != '/' ) return false;
AStringVector split = StringSplit( Command, " " );
if( split.size() == 0 )
return false;
if (split[0].compare("/coords") == 0)
{
AString Pos;
Printf(Pos, "[X:%0.2f] [Y:%0.2f] [Z:%0.2f]", a_Client.GetPlayer()->GetPosX(), a_Client.GetPlayer()->GetPosY(), a_Client.GetPlayer()->GetPosZ() );
a_Client.Send( cPacket_Chat(cChatColor::Green + Pos));
return true;
}
if (split[0].compare("/viewdistance") == 0)
{
if (split.size() != 2)
{
a_Client.Send(cPacket_Chat(cChatColor::Green + "Invalid syntax, expected 1 parameter, the numebr of chunks to stream"));
return false;
}
int dist = atol(split[1].c_str());
a_Client.SetViewDistance(dist);
return true;
}
return false;
}
void cServer::ServerCommand( const char * a_Cmd )
{
AString Command( a_Cmd );
AStringVector split = StringSplit( Command, " " );
if( split.size() > 0 )
{
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("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()->GetWorld()->SaveAllChunks(); // TODO - Force ALL worlds to save their chunks
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()->GetSocket().GetIPString().c_str());
return false;
}
} Logger;
cRoot::Get()->GetWorld()->ForEachPlayer(Logger);
return;
}
if( split[0].compare( "numchunks" ) == 0 )
{
LOG("Num loaded chunks: %i", cRoot::Get()->GetTotalChunkCount() );
return;
}
if(split[0].compare("monsters") == 0 )
{
// TODO: cWorld::ListMonsters();
return;
}
if(split.size() > 1)
{
if( split[0].compare( "say" ) == 0 )
{
std::string Message = cChatColor::Purple + "[SERVER] " + Command.substr( Command.find_first_of("say") + 4 );
LOG("%s", Message.c_str() );
Broadcast( cPacket_Chat(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 char* a_Message, cPlayer* a_Player /* = 0 */, bool a_bExclude /* = false */ )
{
cPacket_Chat Chat( a_Message );
if( a_Player && !a_bExclude )
{
cClientHandle* Client = a_Player->GetClientHandle();
if( Client ) Client->Send( Chat );
return;
}
Broadcast( Chat, (a_Player)?a_Player->GetClientHandle():0 );
}
void cServer::Shutdown()
{
m_bRestarting = true;
m_pState->RestartEvent.Wait();
cRoot::Get()->GetWorld()->SaveAllChunks();
cCSLock Lock(m_CSClients);
for( ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr )
{
delete *itr;
}
m_Clients.clear();
}
const AString & cServer::GetServerID(void) const
{
return m_pState->ServerID;
}
void cServer::KickUser(const AString & iUserName, const AString & iReason)
{
cCSLock Lock(m_CSClients);
for (ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
{
if ((*itr)->GetUsername() == iUserName)
{
(*itr)->Kick(iReason);
}
} // for itr - m_Clients[]
}
void cServer::AuthenticateUser(const AString & iUserName)
{
cCSLock Lock(m_CSClients);
for (ClientList::iterator itr = m_Clients.begin(); itr != m_Clients.end(); ++itr)
{
if ((*itr)->GetUsername() == iUserName)
{
(*itr)->Authenticate();
}
} // for itr - m_Clients[]
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cServer::cClientPacketThread:
cServer::cNotifyWriteThread::cNotifyWriteThread(void) :
super("ClientPacketThread"),
m_Server(NULL)
{
}
cServer::cNotifyWriteThread::~cNotifyWriteThread()
{
mShouldTerminate = 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 (!mShouldTerminate)
{
cCSLock Lock(m_CS);
while (m_Clients.size() == 0)
{
cCSUnlock Unlock(Lock);
m_Event.Wait();
if (mShouldTerminate)
{
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();
}