Added banmaster by heinrich5991

bam.lua

@@ -236,6 +236,7 @@ function build(settings)
 	
 	versionserver = Compile(settings, Collect("src/versionsrv/*.cpp"))
 	masterserver = Compile(settings, Collect("src/mastersrv/*.cpp"))
+	banmaster = Compile(settings, Collect("src/banmaster/*.cpp"))
 	game_shared = Compile(settings, Collect("src/game/*.cpp"), nethash, network_source)
 	game_client = Compile(settings, CollectRecursive("src/game/client/*.cpp"), client_content_source)
 	game_server = Compile(settings, CollectRecursive("src/game/server/*.cpp"), server_content_source)
@@ -276,6 +277,9 @@ function build(settings)
 	masterserver_exe = Link(server_settings, "mastersrv", masterserver,
 		engine, zlib)
 
+	banmaster_exe = Link(server_settings, "banmaster", banmaster,
+		engine, zlib)
+
 	-- make targets
 	c = PseudoTarget("client".."_"..settings.config_name, client_exe, client_depends)
 	if string.find(settings.config_name, "nosql") then
@@ -295,9 +299,10 @@ function build(settings)
 
 	v = PseudoTarget("versionserver".."_"..settings.config_name, versionserver_exe)
 	m = PseudoTarget("masterserver".."_"..settings.config_name, masterserver_exe)
+	b = PseudoTarget("banmaster".."_"..settings.config_name, banmaster_exe)
 	t = PseudoTarget("tools".."_"..settings.config_name, tools)
 
-	all = PseudoTarget(settings.config_name, c, s, v, m, t)
+	all = PseudoTarget(settings.config_name, c, s, v, m, b, t)
 	return all
 end
 

banmasters.cfg

@@ -0,0 +1,2 @@
+clear_banmasters
+add_banmaster banmaster.kottnet.net

bans.cfg

@@ -0,0 +1 @@
+unban_all

scripts/make_release.py

@@ -64,6 +64,7 @@ shutil.copy("license.txt", package_dir)
 shutil.copy("storage.cfg", package_dir)
 shutil.copy("announcement.txt", package_dir)
 shutil.copy("license_DDRace.txt", package_dir)
+shutil.copy("banmasters.cfg", package_dir)
 
 if include_data and not use_bundle:
 	os.mkdir(os.path.join(package_dir, "data"))

src/banmaster/banmaster.cpp

@@ -0,0 +1,250 @@
+/* (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/console.h>
+#include <engine/storage.h>
+
+#include "banmaster.h"
+
+enum 
+{
+	MAX_BANS=1024,
+	BAN_REREAD_TIME=300,
+	CFGFLAG_BANMASTER=1024,
+};
+
+static const char BANMASTER_BANFILE[] = "bans.cfg";
+
+struct CBan
+{
+	NETADDR m_Address;
+	char m_aReason[256];
+	int64 m_Expire;
+};
+
+static CBan m_aBans[MAX_BANS];
+static int m_NumBans = 0;
+static CNetClient m_Net;
+static IConsole *m_pConsole;
+static char m_aBindAddr[64] = "";
+
+CBan* CheckBan(NETADDR *pCheck)
+{
+	for(int i = 0; i < m_NumBans; i++)
+	{
+		if(pCheck->ip[0] == m_aBans[i].m_Address.ip[0] && pCheck->ip[1] == m_aBans[i].m_Address.ip[1] && 
+			pCheck->ip[2] == m_aBans[i].m_Address.ip[2] && pCheck->ip[3] == m_aBans[i].m_Address.ip[3])
+			return &m_aBans[i];
+	}
+	return 0;
+}
+
+int SendResponse(NETADDR *pAddr, NETADDR *pCheck)
+{
+	static char aIpBan[sizeof(BANMASTER_IPBAN) + 32 + 256] = { 0 };
+	static char *pIpBanContent = aIpBan + sizeof(BANMASTER_IPBAN);
+	if (!aIpBan[0])
+		mem_copy(aIpBan, BANMASTER_IPBAN, sizeof(BANMASTER_IPBAN));
+	
+	static CNetChunk p;
+	
+	p.m_ClientID = -1;
+	p.m_Address = *pAddr;
+	p.m_Flags = NETSENDFLAG_CONNLESS;
+
+	CBan* pBan = CheckBan(pCheck);
+	if(pBan)
+	{
+		str_format(pIpBanContent, 32, "%d.%d.%d.%d", pCheck->ip[0], pCheck->ip[1], pCheck->ip[2], pCheck->ip[3]);
+		char *pIpBanReason = pIpBanContent + (str_length(pIpBanContent) + 1);
+		str_copy(pIpBanReason, pBan->m_aReason, 256);
+		
+		p.m_pData = aIpBan;
+		p.m_DataSize = sizeof(BANMASTER_IPBAN) + str_length(pIpBanContent) + 1 + str_length(pIpBanReason) + 1;
+		m_Net.Send(&p);
+		return 1;
+	}
+	else
+	{
+		p.m_DataSize = sizeof(BANMASTER_IPOK);
+		p.m_pData = BANMASTER_IPOK;
+		m_Net.Send(&p);
+		return 0;
+	}
+}
+
+void AddBan(NETADDR *pAddr, const char *pReason)
+{
+	CBan *pBan = CheckBan(pAddr);
+	if(pBan)
+	{
+		dbg_msg("banmaster", "updated ban: %d.%d.%d.%d \'%s\' -> \'%s\'",
+			pAddr->ip[0], pAddr->ip[1], pAddr->ip[2], pAddr->ip[3], pBan->m_aReason, pReason);
+	
+		str_copy(pBan->m_aReason, pReason, sizeof(m_aBans[m_NumBans].m_aReason));
+		pBan->m_Expire = -1;
+	}
+	else
+	{	
+		if(m_NumBans == MAX_BANS)
+		{
+			dbg_msg("banmaster", "error: banmaster is full");
+			return;
+		}
+
+		m_aBans[m_NumBans].m_Address = *pAddr;
+		str_copy(m_aBans[m_NumBans].m_aReason, pReason, sizeof(m_aBans[m_NumBans].m_aReason));
+		m_aBans[m_NumBans].m_Expire = -1;
+
+		dbg_msg("banmaster", "added ban: %d.%d.%d.%d \'%s\'",
+			pAddr->ip[0], pAddr->ip[1], pAddr->ip[2], pAddr->ip[3], m_aBans[m_NumBans].m_aReason);
+	
+		m_NumBans++;
+	}
+}
+
+void ClearBans()
+{
+	dbg_msg("banmaster", "cleared bans");
+	m_NumBans = 0;
+}
+
+void PurgeBans()
+{
+	int64 Now = time_get();
+	int i = 0;
+	while(i < m_NumBans)
+	{
+		if(m_aBans[i].m_Expire != -1 && m_aBans[i].m_Expire < Now)
+		{
+			// remove ban
+			dbg_msg("banmaster", "expired: %d.%d.%d.%d \'%s\'",
+				m_aBans[i].m_Address.ip[0], m_aBans[i].m_Address.ip[1],
+				m_aBans[i].m_Address.ip[2], m_aBans[i].m_Address.ip[3], m_aBans[i].m_aReason);
+			m_aBans[i] = m_aBans[m_NumBans-1];
+			m_NumBans--;
+		}
+		else
+			i++;
+	}
+}
+
+void ConBan(IConsole::IResult *pResult, void *pUser)
+{
+	NETADDR Addr;
+	const char *pStr = pResult->GetString(0);
+	const char *pReason = "";
+	
+	if(pResult->NumArguments() > 1)
+		pReason = pResult->GetString(1);
+	
+	if(!net_addr_from_str(&Addr, pStr))
+		AddBan(&Addr, pReason);
+	else
+		dbg_msg("banmaster", "invalid network address to ban");
+}
+
+void ConUnbanAll(IConsole::IResult *pResult, void *pUser)
+{
+	ClearBans();
+}
+
+void ConSetBindAddr(IConsole::IResult *pResult, void *pUser)
+{
+	if(m_aBindAddr[0])
+		return;
+	str_copy(m_aBindAddr, pResult->GetString(0), sizeof(m_aBindAddr));
+	dbg_msg("banmaster/network", "bound to %s", m_aBindAddr);
+}
+
+void StandardOutput(const char *pLine, void *pUser)
+{
+}
+
+int main(int argc, const char **argv) // ignore_convention
+{
+	int64 LastUpdate = time_get();
+
+	dbg_logger_stdout();
+	net_init();
+
+	IKernel *pKernel = IKernel::Create();
+	IStorage *pStorage = CreateStorage("Teeworlds", argc, argv); // ignore_convention
+
+	m_pConsole = CreateConsole(CFGFLAG_BANMASTER);
+	m_pConsole->RegisterPrintCallback(StandardOutput, 0);
+	m_pConsole->Register("ban", "s?r", CFGFLAG_BANMASTER, ConBan, 0, "Bans the specified ip");
+	m_pConsole->Register("unban_all", "", CFGFLAG_BANMASTER, ConUnbanAll, 0, "Unbans all ips");
+	m_pConsole->Register("bind", "s", CFGFLAG_BANMASTER, ConSetBindAddr, 0, "Binds to the specified address");
+
+	{
+		bool RegisterFail = false;
+
+		RegisterFail = RegisterFail || !pKernel->RegisterInterface(m_pConsole);
+		RegisterFail = RegisterFail || !pKernel->RegisterInterface(pStorage);
+		
+		if(RegisterFail)
+			return -1;
+	}
+
+	m_pConsole->ExecuteFile(BANMASTER_BANFILE);
+	
+	NETADDR BindAddr;
+	if(m_aBindAddr[0] && net_host_lookup(m_aBindAddr, &BindAddr, NETTYPE_IPV4) == 0)
+	{
+		if(BindAddr.port == 0)
+			BindAddr.port = BANMASTER_PORT;
+	}
+	else
+	{
+		mem_zero(&BindAddr, sizeof(BindAddr));
+		BindAddr.port = BANMASTER_PORT;
+	}
+		
+	m_Net.Open(BindAddr, 0);
+	// TODO: check socket for errors
+
+	dbg_msg("banmaster", "started");
+	
+	while(1)
+	{
+		m_Net.Update();
+		
+		// process m_aPackets
+		CNetChunk p;
+		while(m_Net.Recv(&p))
+		{
+			if(p.m_DataSize >= sizeof(BANMASTER_IPCHECK) &&
+				!mem_comp(p.m_pData, BANMASTER_IPCHECK, sizeof(BANMASTER_IPCHECK)))
+			{
+				char *pAddr = (char*)p.m_pData + sizeof(BANMASTER_IPCHECK);
+				NETADDR CheckAddr;
+				if(net_addr_from_str(&CheckAddr, pAddr))
+				{
+					dbg_msg("banmaster", "dropped weird message ip=%d.%d.%d.%d checkaddr='%s'",
+						p.m_Address.ip[0], p.m_Address.ip[1], p.m_Address.ip[2], p.m_Address.ip[3], pAddr);
+				}
+				else
+				{
+					int Banned = SendResponse(&p.m_Address, &CheckAddr);
+					dbg_msg("banmaster", "responded to checkmsg ip=%d.%d.%d.%d checkaddr=%d.%d.%d.%d result=%s",
+						p.m_Address.ip[0], p.m_Address.ip[1], p.m_Address.ip[2], p.m_Address.ip[3], 
+						CheckAddr.ip[0], CheckAddr.ip[1], CheckAddr.ip[2], CheckAddr.ip[3], (Banned) ? "ban" : "ok");
+				}
+			}
+		}
+		
+		if(time_get() - LastUpdate > time_freq() * BAN_REREAD_TIME)
+		{
+			ClearBans();
+			LastUpdate = time_get();
+			m_pConsole->ExecuteFile(BANMASTER_BANFILE);
+		}
+		
+		// be nice to the CPU
+		thread_sleep(1);
+	}
+	
+	return 0;
+}

src/banmaster/banmaster.h

@@ -0,0 +1,12 @@
+/* (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.                */
+#ifndef BANMASTER_BANMASTER_H
+#define BANMASTER_BANMASTER_H
+
+static const int BANMASTER_PORT = 8302;
+
+static const char BANMASTER_IPOK[] = {255, 255, 255, 255, 'i', 'p', 'o', 'k'};
+static const char BANMASTER_IPBAN[] = {255, 255, 255, 255, 'i', 'p', 'b', 'a'};
+static const char BANMASTER_IPCHECK[] = {255, 255, 255, 255, 'i', 'p', 'c', 'h'};
+
+#endif

src/engine/server/server.cpp

@@ -28,6 +28,8 @@
 
 #include <string.h>
 
+#include <banmaster/banmaster.h>
+
 #include "register.h"
 #include "server.h"
 #include "../shared/linereader.h"
@@ -39,6 +41,8 @@
 	#include <windows.h>
 #endif
 
+static const char SERVER_BANMASTERFILE[] = "banmasters.cfg";
+
 static const char *StrLtrim(const char *pStr)
 {
 	while(*pStr && *pStr >= 0 && *pStr <= 32)
@@ -1095,6 +1099,33 @@ void CServer::PumpNetwork()
 				{
 					SendServerInfo(&Packet.m_Address, -1);
 				}
+				
+				if(Packet.m_DataSize >= sizeof(BANMASTER_IPOK) &&
+				  mem_comp(Packet.m_pData, BANMASTER_IPOK, sizeof(BANMASTER_IPOK)) == 0 &&
+				  m_NetServer.BanmasterCheck(&Packet.m_Address) != -1)
+				{
+				}
+
+				if(Packet.m_DataSize >= sizeof(BANMASTER_IPBAN) &&
+				  mem_comp(Packet.m_pData, BANMASTER_IPBAN, sizeof(BANMASTER_IPBAN)) == 0 &&
+				  g_Config.m_SvGlobalBantime &&
+				  m_NetServer.BanmasterCheck(&Packet.m_Address) != -1)
+				{
+					CUnpacker Up;
+					char aIp[32];
+					char aReason[256];
+					NETADDR Addr;
+					Up.Reset((unsigned char*)Packet.m_pData + sizeof(BANMASTER_IPBAN), Packet.m_DataSize - sizeof(BANMASTER_IPBAN));
+					str_copy(aIp, Up.GetString(CUnpacker::SANITIZE_CC|CUnpacker::SKIP_START_WHITESPACES), sizeof(aIp));
+					str_copy(aReason, Up.GetString(CUnpacker::SANITIZE_CC|CUnpacker::SKIP_START_WHITESPACES), sizeof(aReason));
+					if (net_addr_from_str(&Addr, aIp))
+					{
+						dbg_msg("globalbans", "dropped weird message from banmaster");
+						return;
+					}
+					m_NetServer.BanAdd(Addr, g_Config.m_SvGlobalBantime * 60, aReason);
+					dbg_msg("globalbans", "added ban, ip=%d.%d.%d.%d, reason=\"%s\"", Addr.ip[0], Addr.ip[1], Addr.ip[2], Addr.ip[3], aReason);
+				}
 			}
 		}
 		else
@@ -1215,6 +1246,8 @@ int CServer::Run()
 
 	m_NetServer.SetCallbacks(NewClientCallback, DelClientCallback, this);
 
+	Console()->ExecuteFile(SERVER_BANMASTERFILE);
+		
 	char aBuf[256];
 	str_format(aBuf, sizeof(aBuf), "server name is '%s'", g_Config.m_SvName);
 	Console()->Print(IConsole::OUTPUT_LEVEL_STANDARD, "server", aBuf);
@@ -1633,6 +1666,10 @@ void CServer::RegisterCommands()
 	Console()->Register("record", "?s", CFGFLAG_SERVER|CFGFLAG_STORE, ConRecord, this, "", 3);
 	Console()->Register("stoprecord", "", CFGFLAG_SERVER, ConStopRecord, this, "", 3);
 	
+	Console()->Register("add_banmaster", "s", CFGFLAG_SERVER, ConAddBanmaster, this, "", 4);
+	Console()->Register("banmasters", "", CFGFLAG_SERVER, ConBanmasters, this, "", 3);
+	Console()->Register("clear_banmasters",	"", CFGFLAG_SERVER, ConClearBanmasters, this, "", 4);
+	
 	Console()->Register("reload", "", CFGFLAG_SERVER, ConMapReload, this, "", 3);
 
 	Console()->Chain("sv_name", ConchainSpecialInfoupdate, this);
@@ -1913,3 +1950,42 @@ NETADDR CServer::GetClientIP(int ClientID)//this may exist already but i couldn'
 	return m_NetServer.ClientAddr(ClientID);
 }
 
+void CServer::ConAddBanmaster(IConsole::IResult *pResult, void *pUser, int ClientId)
+{
+	CServer *pServer = (CServer *)pUser;
+	
+	int Result = pServer->m_NetServer.BanmasterAdd(pResult->GetString(0));
+	
+	if(Result == 0)
+		pServer->Console()->PrintResponse(IConsole::OUTPUT_LEVEL_STANDARD, "server/banmaster", "succesfully added banmaster");
+	else if (Result == 1)
+		pServer->Console()->PrintResponse(IConsole::OUTPUT_LEVEL_STANDARD, "server/banmaster", "invalid address for banmaster / net lookup failed");
+	else
+		pServer->Console()->PrintResponse(IConsole::OUTPUT_LEVEL_STANDARD, "server/banmaster", "too many banmasters");
+}
+
+void CServer::ConBanmasters(IConsole::IResult *pResult, void *pUser, int ClientId)
+{
+	CServer *pServer = (CServer *)pUser;
+	int NumBanmasters = pServer->m_NetServer.BanmasterNum();
+	
+	char aBuf[128];
+	char aIpString[64];
+	
+	for(int i = 0; i < NumBanmasters; i++)
+	{
+		NETADDR *pBanmaster = pServer->m_NetServer.BanmasterGet(i);
+		net_addr_str(pBanmaster, aIpString, sizeof(aIpString));
+		str_format(aBuf, sizeof(aBuf), "%d: %s", i, aIpString);
+		pServer->Console()->PrintResponse(IConsole::OUTPUT_LEVEL_STANDARD, "server/banmaster", aBuf);
+	}
+}
+
+void CServer::ConClearBanmasters(IConsole::IResult *pResult, void *pUser, int ClientId)
+{
+	CServer *pServer = (CServer *)pUser;
+	
+	pServer->m_NetServer.BanmastersClear();
+}
+
+

src/engine/server/server.h

@@ -232,6 +232,9 @@ public:
 	virtual void SnapFreeID(int ID);
 	virtual void *SnapNewItem(int Type, int Id, int Size);
 	void SnapSetStaticsize(int ItemType, int Size);
+	static void ConAddBanmaster(IConsole::IResult *pResult, void *pUser, int ClientId);
+	static void ConBanmasters(IConsole::IResult *pResult, void *pUser, int ClientId);
+	static void ConClearBanmasters(IConsole::IResult *pResult, void *pUser, int ClientId);
 };
 
 #endif

src/engine/shared/config_variables.h

@@ -199,5 +199,6 @@ MACRO_CONFIG_INT(ClDemoName, cl_demo_name, 1, 0, 1, CFGFLAG_CLIENT|CFGFLAG_SAVE,
 MACRO_CONFIG_INT(ClRaceGhost, cl_race_ghost, 1, 0, 1, CFGFLAG_CLIENT|CFGFLAG_SAVE, "Enable ghost",-1)
 MACRO_CONFIG_INT(ClRaceShowGhost, cl_race_show_ghost, 1, 0, 1, CFGFLAG_CLIENT|CFGFLAG_SAVE, "Show ghost",-1)
 MACRO_CONFIG_INT(ClRaceSaveGhost, cl_race_save_ghost, 1, 0, 1, CFGFLAG_CLIENT|CFGFLAG_SAVE, "Save ghost",-1)
+MACRO_CONFIG_INT(SvGlobalBantime, sv_global_ban_time, 60, 0, 1440, CFGFLAG_SERVER, "The time a client gets banned if the ban server reports it. 0 to disable", 4)
 
 #endif

src/engine/shared/network.h

@@ -289,6 +289,20 @@ public:
 
 	//
 	void SetMaxClientsPerIP(int Max);
+	int BanmasterAdd(const char *pAddrStr);
+	int BanmasterNum() const;
+	NETADDR* BanmasterGet(int Index);
+	int BanmasterCheck(NETADDR *pAddr);
+	void BanmastersClear();
+	enum
+	{
+		MAX_BANMASTERS=16,
+		NETSERVER_DISABLEBANMASTER=1,
+	};
+	int m_Flags;
+	NETADDR m_aBanmasters[MAX_BANMASTERS];
+	int m_NumBanmasters;
+
 };
 
 

src/engine/shared/network_server.cpp

@@ -1,6 +1,7 @@
 /* (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 <banmaster/banmaster.h>
 #include "network.h"
 
 #define MACRO_LIST_LINK_FIRST(Object, First, Prev, Next) \
@@ -59,6 +60,8 @@ bool CNetServer::Open(NETADDR BindAddr, int MaxClients, int MaxClientsPerIP, int
 	m_BanPool[NET_SERVER_MAXBANS-1].m_pPrev = &m_BanPool[NET_SERVER_MAXBANS-2];
 	m_BanPool_FirstFree = &m_BanPool[0];
 
+	m_Flags = Flags;
+
 	return true;
 }
 
@@ -338,6 +341,25 @@ int CNetServer::Recv(CNetChunk *pChunk)
 					// client that wants to connect
 					if(!Found)
 					{
+						if(!(m_Flags & NETSERVER_DISABLEBANMASTER))
+						{
+							CNetChunk Packet;
+							char aBuffer[64];
+							mem_copy(aBuffer, BANMASTER_IPCHECK, sizeof(BANMASTER_IPCHECK));
+							net_addr_str(&Addr, aBuffer + sizeof(BANMASTER_IPCHECK), sizeof(aBuffer) - sizeof(BANMASTER_IPCHECK));
+
+							Packet.m_ClientID = -1;
+							Packet.m_Flags = NETSENDFLAG_CONNLESS;
+							Packet.m_DataSize = str_length(aBuffer) + 1;
+							Packet.m_pData = aBuffer;
+							
+							for(int i = 0; i < m_NumBanmasters; i++)
+							{
+								Packet.m_Address = m_aBanmasters[i];
+								Send(&Packet);
+							}
+						}
+
 						// only allow a specific number of players with the same ip
 						NETADDR ThisAddr = Addr, OtherAddr;
 						int FoundAddr = 1;
@@ -369,6 +391,7 @@ int CNetServer::Recv(CNetChunk *pChunk)
 								m_aSlots[i].m_Connection.Feed(&m_RecvUnpacker.m_Data, &Addr);
 								if(m_pfnNewClient)
 									m_pfnNewClient(i, m_UserPtr);
+								
 								break;
 							}
 						}
@@ -447,3 +470,48 @@ void CNetServer::SetMaxClientsPerIP(int Max)
 
 	m_MaxClientsPerIP = Max;
 }
+
+int CNetServer::BanmasterAdd(const char *pAddrStr)
+{
+	if(m_NumBanmasters >= MAX_BANMASTERS)
+		return 2;
+	
+	if(net_host_lookup(pAddrStr, &m_aBanmasters[m_NumBanmasters], NETTYPE_IPV4))
+		return 1;
+	
+	if(m_aBanmasters[m_NumBanmasters].port == 0)
+		m_aBanmasters[m_NumBanmasters].port = BANMASTER_PORT;
+	
+	m_NumBanmasters++;
+	return 0;
+}
+
+int CNetServer::BanmasterNum() const
+{
+	return m_NumBanmasters;
+}
+
+NETADDR* CNetServer::BanmasterGet(int Index)
+{
+	if(Index < 0 || Index >= m_NumBanmasters)
+		return 0;
+	
+	return &m_aBanmasters[Index];
+}
+
+int CNetServer::BanmasterCheck(NETADDR *pAddr)
+{
+	for(int i = 0; i < m_NumBanmasters; i++)
+	{
+		if(!net_addr_comp(&m_aBanmasters[i], pAddr))
+			return i;
+	}
+
+	return -1;
+}
+
+void CNetServer::BanmastersClear()
+{
+	m_NumBanmasters = 0;
+}
+