1 files changed, 0 insertions, 298 deletions
diff --git a/NorthstarDLL/limits.cpp b/NorthstarDLL/limits.cpp
deleted file mode 100644
index c254de52..00000000
--- a/NorthstarDLL/limits.cpp
+++ /dev/null
@@ -1,298 +0,0 @@
-#include "pch.h"
-#include "limits.h"
-#include "hoststate.h"
-#include "r2client.h"
-#include "r2engine.h"
-#include "r2server.h"
-#include "maxplayers.h"
-#include "tier0.h"
-#include "vector.h"
-#include "serverauthentication.h"
-
-AUTOHOOK_INIT()
-
-ServerLimitsManager* g_pServerLimits;
-
-// todo: make this work on higher timescales, also possibly disable when sv_cheats is set
-void ServerLimitsManager::RunFrame(double flCurrentTime, float flFrameTime)
-{
-	if (Cvar_sv_antispeedhack_enable->GetBool())
-	{
-		// for each player, set their usercmd processing budget for the frame to the last frametime for the server
-		for (int i = 0; i < R2::GetMaxPlayers(); i++)
-		{
-			R2::CBaseClient* player = &R2::g_pClientArray[i];
-
-			if (m_PlayerLimitData.find(player) != m_PlayerLimitData.end())
-			{
-				PlayerLimitData* pLimitData = &g_pServerLimits->m_PlayerLimitData[player];
-				if (pLimitData->flFrameUserCmdBudget < 0.016666667 * Cvar_sv_antispeedhack_maxtickbudget->GetFloat())
-					pLimitData->flFrameUserCmdBudget +=
-						fmax(flFrameTime, 0.016666667) * g_pServerLimits->Cvar_sv_antispeedhack_budgetincreasemultiplier->GetFloat();
-			}
-		}
-	}
-}
-
-void ServerLimitsManager::AddPlayer(R2::CBaseClient* player)
-{
-	PlayerLimitData limitData;
-	limitData.flFrameUserCmdBudget = 0.016666667 * Cvar_sv_antispeedhack_maxtickbudget->GetFloat();
-
-	m_PlayerLimitData.insert(std::make_pair(player, limitData));
-}
-
-void ServerLimitsManager::RemovePlayer(R2::CBaseClient* player)
-{
-	if (m_PlayerLimitData.find(player) != m_PlayerLimitData.end())
-		m_PlayerLimitData.erase(player);
-}
-
-bool ServerLimitsManager::CheckStringCommandLimits(R2::CBaseClient* player)
-{
-	if (CVar_sv_quota_stringcmdspersecond->GetInt() != -1)
-	{
-		// note: this isn't super perfect, legit clients can trigger it in lobby if they try, mostly good enough tho imo
-		if (Tier0::Plat_FloatTime() - m_PlayerLimitData[player].lastClientCommandQuotaStart >= 1.0)
-		{
-			// reset quota
-			m_PlayerLimitData[player].lastClientCommandQuotaStart = Tier0::Plat_FloatTime();
-			m_PlayerLimitData[player].numClientCommandsInQuota = 0;
-		}
-
-		m_PlayerLimitData[player].numClientCommandsInQuota++;
-		if (m_PlayerLimitData[player].numClientCommandsInQuota > CVar_sv_quota_stringcmdspersecond->GetInt())
-		{
-			// too many stringcmds, dc player
-			return false;
-		}
-	}
-
-	return true;
-}
-
-bool ServerLimitsManager::CheckChatLimits(R2::CBaseClient* player)
-{
-	if (Tier0::Plat_FloatTime() - m_PlayerLimitData[player].lastSayTextLimitStart >= 1.0)
-	{
-		m_PlayerLimitData[player].lastSayTextLimitStart = Tier0::Plat_FloatTime();
-		m_PlayerLimitData[player].sayTextLimitCount = 0;
-	}
-
-	if (m_PlayerLimitData[player].sayTextLimitCount >= Cvar_sv_max_chat_messages_per_sec->GetInt())
-		return false;
-
-	m_PlayerLimitData[player].sayTextLimitCount++;
-	return true;
-}
-
-// clang-format off
-AUTOHOOK(CNetChan__ProcessMessages, engine.dll + 0x2140A0, 
-char, __fastcall, (void* self, void* buf))
-// clang-format on
-{
-	enum eNetChanLimitMode
-	{
-		NETCHANLIMIT_WARN,
-		NETCHANLIMIT_KICK
-	};
-
-	double startTime = Tier0::Plat_FloatTime();
-	char ret = CNetChan__ProcessMessages(self, buf);
-
-	// check processing limits, unless we're in a level transition
-	if (R2::g_pHostState->m_iCurrentState == R2::HostState_t::HS_RUN && Tier0::ThreadInServerFrameThread())
-	{
-		// player that sent the message
-		R2::CBaseClient* sender = *(R2::CBaseClient**)((char*)self + 368);
-
-		// if no sender, return
-		// relatively certain this is fine?
-		if (!sender || !g_pServerLimits->m_PlayerLimitData.count(sender))
-			return ret;
-
-		// reset every second
-		if (startTime - g_pServerLimits->m_PlayerLimitData[sender].lastNetChanProcessingLimitStart >= 1.0 ||
-			g_pServerLimits->m_PlayerLimitData[sender].lastNetChanProcessingLimitStart == -1.0)
-		{
-			g_pServerLimits->m_PlayerLimitData[sender].lastNetChanProcessingLimitStart = startTime;
-			g_pServerLimits->m_PlayerLimitData[sender].netChanProcessingLimitTime = 0.0;
-		}
-		g_pServerLimits->m_PlayerLimitData[sender].netChanProcessingLimitTime += (Tier0::Plat_FloatTime() * 1000) - (startTime * 1000);
-
-		if (g_pServerLimits->m_PlayerLimitData[sender].netChanProcessingLimitTime >=
-			g_pServerLimits->Cvar_net_chan_limit_msec_per_sec->GetInt())
-		{
-			spdlog::warn(
-				"Client {} hit netchan processing limit with {}ms of processing time this second (max is {})",
-				(char*)sender + 0x16,
-				g_pServerLimits->m_PlayerLimitData[sender].netChanProcessingLimitTime,
-				g_pServerLimits->Cvar_net_chan_limit_msec_per_sec->GetInt());
-
-			// never kick local player
-			if (g_pServerLimits->Cvar_net_chan_limit_mode->GetInt() != NETCHANLIMIT_WARN && strcmp(R2::g_pLocalPlayerUserID, sender->m_UID))
-			{
-				R2::CBaseClient__Disconnect(sender, 1, "Exceeded net channel processing limit");
-				return false;
-			}
-		}
-	}
-
-	return ret;
-}
-
-// clang-format off
-AUTOHOOK(ProcessConnectionlessPacket, engine.dll + 0x117800, 
-bool, , (void* a1, R2::netpacket_t* packet))
-// clang-format on
-{
-	static const ConVar* Cvar_net_data_block_enabled = R2::g_pCVar->FindVar("net_data_block_enabled");
-
-	// don't ratelimit datablock packets as long as datablock is enabled
-	if (packet->adr.type == R2::NA_IP &&
-		(!(packet->data[4] == 'N' && Cvar_net_data_block_enabled->GetBool()) || !Cvar_net_data_block_enabled->GetBool()))
-	{
-		// bad lookup: optimise later tm
-		UnconnectedPlayerLimitData* sendData = nullptr;
-		for (UnconnectedPlayerLimitData& foundSendData : g_pServerLimits->m_UnconnectedPlayerLimitData)
-		{
-			if (!memcmp(packet->adr.ip, foundSendData.ip, 16))
-			{
-				sendData = &foundSendData;
-				break;
-			}
-		}
-
-		if (!sendData)
-		{
-			sendData = &g_pServerLimits->m_UnconnectedPlayerLimitData.emplace_back();
-			memcpy(sendData->ip, packet->adr.ip, 16);
-		}
-
-		if (Tier0::Plat_FloatTime() < sendData->timeoutEnd)
-			return false;
-
-		if (Tier0::Plat_FloatTime() - sendData->lastQuotaStart >= 1.0)
-		{
-			sendData->lastQuotaStart = Tier0::Plat_FloatTime();
-			sendData->packetCount = 0;
-		}
-
-		sendData->packetCount++;
-
-		if (sendData->packetCount >= g_pServerLimits->Cvar_sv_querylimit_per_sec->GetInt())
-		{
-			spdlog::warn(
-				"Client went over connectionless ratelimit of {} per sec with packet of type {}",
-				g_pServerLimits->Cvar_sv_querylimit_per_sec->GetInt(),
-				packet->data[4]);
-
-			// timeout for a minute
-			sendData->timeoutEnd = Tier0::Plat_FloatTime() + 60.0;
-			return false;
-		}
-	}
-
-	return ProcessConnectionlessPacket(a1, packet);
-}
-
-// this is weird and i'm not sure if it's correct, so not using for now
-/*AUTOHOOK(CBasePlayer__PhysicsSimulate, server.dll + 0x5A6E50, bool, __fastcall, (void* self, int a2, char a3))
-{
-	spdlog::info("CBasePlayer::PhysicsSimulate");
-	return CBasePlayer__PhysicsSimulate(self, a2, a3);
-}*/
-
-struct alignas(4) SV_CUserCmd
-{
-	DWORD command_number;
-	DWORD tick_count;
-	float command_time;
-	Vector3 worldViewAngles;
-	BYTE gap18[4];
-	Vector3 localViewAngles;
-	Vector3 attackangles;
-	Vector3 move;
-	DWORD buttons;
-	BYTE impulse;
-	short weaponselect;
-	DWORD meleetarget;
-	BYTE gap4C[24];
-	char headoffset;
-	BYTE gap65[11];
-	Vector3 cameraPos;
-	Vector3 cameraAngles;
-	BYTE gap88[4];
-	int tickSomething;
-	DWORD dword90;
-	DWORD predictedServerEventAck;
-	DWORD dword98;
-	float frameTime;
-};
-
-// clang-format off
-AUTOHOOK(CPlayerMove__RunCommand, server.dll + 0x5B8100,
-void, __fastcall, (void* self, R2::CBasePlayer* player, SV_CUserCmd* pUserCmd, uint64_t a4))
-// clang-format on
-{
-	if (g_pServerLimits->Cvar_sv_antispeedhack_enable->GetBool())
-	{
-		R2::CBaseClient* pClient = &R2::g_pClientArray[player->m_nPlayerIndex - 1];
-
-		if (g_pServerLimits->m_PlayerLimitData.find(pClient) != g_pServerLimits->m_PlayerLimitData.end())
-		{
-			PlayerLimitData* pLimitData = &g_pServerLimits->m_PlayerLimitData[pClient];
-
-			pLimitData->flFrameUserCmdBudget = fmax(0.0, pLimitData->flFrameUserCmdBudget - pUserCmd->frameTime);
-
-			if (pLimitData->flFrameUserCmdBudget <= 0.0)
-			{
-				spdlog::warn("player {} went over usercmd budget ({})", pClient->m_Name, pLimitData->flFrameUserCmdBudget);
-				return;
-			}
-			// else
-			//	spdlog::info("{}: {}", pClient->m_Name, pLimitData->flFrameUserCmdBudget);
-		}
-	}
-
-	CPlayerMove__RunCommand(self, player, pUserCmd, a4);
-}
-
-ON_DLL_LOAD_RELIESON("engine.dll", ServerLimits, ConVar, (CModule module))
-{
-	AUTOHOOK_DISPATCH_MODULE(engine.dll)
-
-	g_pServerLimits = new ServerLimitsManager;
-
-	g_pServerLimits->CVar_sv_quota_stringcmdspersecond = new ConVar(
-		"sv_quota_stringcmdspersecond",
-		"60",
-		FCVAR_GAMEDLL,
-		"How many string commands per second clients are allowed to submit, 0 to disallow all string commands, -1 to disable");
-	g_pServerLimits->Cvar_net_chan_limit_mode =
-		new ConVar("net_chan_limit_mode", "0", FCVAR_GAMEDLL, "The mode for netchan processing limits: 0 = warn, 1 = kick");
-	g_pServerLimits->Cvar_net_chan_limit_msec_per_sec = new ConVar(
-		"net_chan_limit_msec_per_sec",
-		"100",
-		FCVAR_GAMEDLL,
-		"Netchannel processing is limited to so many milliseconds, abort connection if exceeding budget");
-	g_pServerLimits->Cvar_sv_querylimit_per_sec = new ConVar("sv_querylimit_per_sec", "15", FCVAR_GAMEDLL, "");
-	g_pServerLimits->Cvar_sv_max_chat_messages_per_sec = new ConVar("sv_max_chat_messages_per_sec", "5", FCVAR_GAMEDLL, "");
-	g_pServerLimits->Cvar_sv_antispeedhack_enable =
-		new ConVar("sv_antispeedhack_enable", "0", FCVAR_NONE, "whether to enable antispeedhack protections");
-	g_pServerLimits->Cvar_sv_antispeedhack_maxtickbudget = new ConVar(
-		"sv_antispeedhack_maxtickbudget",
-		"64",
-		FCVAR_GAMEDLL,
-		"Maximum number of client-issued usercmd ticks that can be replayed in packet loss conditions, 0 to allow no restrictions");
-	g_pServerLimits->Cvar_sv_antispeedhack_budgetincreasemultiplier = new ConVar(
-		"sv_antispeedhack_budgetincreasemultiplier",
-		"1.2",
-		FCVAR_GAMEDLL,
-		"Increase usercmd processing budget by tickinterval * value per tick");
-}
-
-ON_DLL_LOAD("server.dll", ServerLimitsServer, (CModule module))
-{
-	AUTOHOOK_DISPATCH_MODULE(server.dll)
-}