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https://github.com/Mauler125/r5sdk.git
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7804241376
Client's can run string commands on the server with no rate limit. This means when you run 50k+ commands that are unknown, or spam 30k 'status' commands, you will be able to hang the server for 800/1200ms (15k/30kms if script printing to console is enabled!). Although the netchan processing budget system will kick you, the damage has already been done at this point. This change effectively breaks the ability to DOS the server from the client using networked string commands. In easier words; binding 'status' to your mousewheel will get you kicked from the server, without hitching the server.
161 lines
7.9 KiB
C++
161 lines
7.9 KiB
C++
#pragma once
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#include "vpc/keyvalues.h"
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#include "common/protocol.h"
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#include "engine/net_chan.h"
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//-----------------------------------------------------------------------------
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// Enumerations
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//-----------------------------------------------------------------------------
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enum Reputation_t
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{
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REP_NONE = 0,
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REP_REMOVE_ONLY,
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REP_MARK_BAD
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};
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class CServer;
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class CClient;
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///////////////////////////////////////////////////////////////////////////////
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extern CClient* g_pClient;
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class CClient : IClientMessageHandler, INetChannelHandler
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{
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public:
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CClient* GetClient(int nIndex) const;
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uint16_t GetHandle(void) const;
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uint32_t GetUserID(void) const;
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uint64_t GetNucleusID(void) const;
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SIGNONSTATE GetSignonState(void) const;
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PERSISTENCE GetPersistenceState(void) const;
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CNetChan* GetNetChan(void) const;
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const char* GetServerName(void) const;
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const char* GetClientName(void) const;
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void SetHandle(uint16_t nHandle);
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void SetUserID(uint32_t nUserID);
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void SetNucleusID(uint64_t nNucleusID);
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void SetSignonState(SIGNONSTATE nSignonState);
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void SetPersistenceState(PERSISTENCE nPersistenceState);
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void SetNetChan(CNetChan* pNetChan);
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bool IsConnected(void) const;
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bool IsSpawned(void) const;
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bool IsActive(void) const;
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bool IsPersistenceAvailable(void) const;
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bool IsPersistenceReady(void) const;
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bool IsFakeClient(void) const;
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bool IsHumanPlayer(void) const;
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bool Connect(const char* szName, void* pNetChannel, bool bFakePlayer, void* a5, char* szMessage, int nMessageSize);
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void Disconnect(const Reputation_t nRepLvl, const char* szReason, ...);
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static bool VConnect(CClient* pClient, const char* szName, void* pNetChannel, bool bFakePlayer, void* a5, char* szMessage, int nMessageSize);
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void Clear(void);
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static void VClear(CClient* pClient);
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static bool VProcessStringCmd(CClient* pClient, NET_StringCmd* pMsg);
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private:
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uint32_t m_nUserID; //0x0010
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uint16_t m_nHandle; //0x0014
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char m_szServerName[64]; //0x0016
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int64_t m_nReputation; //0x0058
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char pad_0014[182]; //0x0060
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char m_szClientName[64]; //0x0116
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char pad_0015[522]; //0x0156
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KeyValues* m_ConVars; //0x0360
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char pad_0368[8]; //0x0368
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CServer* m_pServer; //0x0370
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char pad_0378[40]; //0x0378
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CNetChan* m_NetChannel; //0x03A0
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char pad_03A8[8]; //0x03A8
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SIGNONSTATE m_nSignonState; //0x03B0
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int32_t m_nDeltaTick; //0x03B4
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uint64_t m_nNucleusID; //0x03B8
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int32_t m_nStringTableAckTick; //0x03BC
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int32_t m_nSignonTick; //0x03C0
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char pad_03C0[464]; //0x03C4
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#if defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
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char pad_0598[8]; //0x0598
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#endif
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bool m_bFakePlayer; //0x05A0
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bool m_bReceivedPacket; //0x05A1
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bool m_bLowViolence; //0x05A2
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bool m_bFullyAuthenticated; //0x05A3
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char pad_05A4[24]; //0x05A4
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PERSISTENCE m_nPersistenceState; //0x05BC
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char pad_05C0[302676]; //0x05C0
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int32_t m_LastMovementTick; //0x4A414
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#if defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
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char pad_4A418[120]; //0x4A418
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#endif
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char pad_4A440[48]; //0x4A440
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};
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#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
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static_assert(sizeof(CClient) == 0x4A440);
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#else
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static_assert(sizeof(CClient) == 0x4A4C0);
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#endif
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/* ==== CBASECLIENT ===================================================================================================================================================== */
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inline CMemory p_CClient_Connect;
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inline auto v_CClient_Connect = p_CClient_Connect.RCast<bool (*)(CClient* pClient, const char* szName, void* pNetChannel, bool bFakePlayer, void* a5, char* szMessage, int nMessageSize)>();
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inline CMemory p_CClient_Disconnect;
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inline auto v_CClient_Disconnect = p_CClient_Disconnect.RCast<bool (*)(CClient* pClient, const Reputation_t nRepLvl, const char* szReason, ...)>();
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inline CMemory p_CClient_Clear;
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inline auto v_CClient_Clear = p_CClient_Clear.RCast<void (*)(CClient* pClient)>();
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inline CMemory p_CClient_ProcessStringCmd;
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inline auto v_CClient_ProcessStringCmd = p_CClient_ProcessStringCmd.RCast<bool (*)(CClient* pClient, NET_StringCmd* pMsg)>();
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///////////////////////////////////////////////////////////////////////////////
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void CBaseClient_Attach();
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void CBaseClient_Detach();
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///////////////////////////////////////////////////////////////////////////////
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class VClient : public IDetour
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{
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virtual void GetAdr(void) const
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{
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spdlog::debug("| FUN: CClient::Connect : {:#18x} |\n", p_CClient_Connect.GetPtr());
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spdlog::debug("| FUN: CClient::Disconnect : {:#18x} |\n", p_CClient_Disconnect.GetPtr());
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spdlog::debug("| FUN: CClient::Clear : {:#18x} |\n", p_CClient_Clear.GetPtr());
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spdlog::debug("| FUN: CClient::ProcessStringCmd : {:#18x} |\n", p_CClient_ProcessStringCmd.GetPtr());
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spdlog::debug("| VAR: g_pClient[128] : {:#18x} |\n", reinterpret_cast<uintptr_t>(g_pClient));
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spdlog::debug("+----------------------------------------------------------------+\n");
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}
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virtual void GetFun(void) const
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{
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p_CClient_Connect = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x89\x5C\x24\x00\x48\x89\x6C\x24\x00\x56\x57\x41\x56\x48\x83\xEC\x20\x41\x0F\xB6\xE9"), "xxxx?xxxx?xxxxxxxxxxxx");
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#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1) || defined (GAMEDLL_S2)
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p_CClient_Disconnect = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x8B\xC4\x4C\x89\x40\x18\x4C\x89\x48\x20\x53\x56\x57\x48\x81\xEC\x00\x00\x00\x00\x83\xB9\x00\x00\x00\x00\x00\x49\x8B\xF8\x0F\xB6\xF2"), "xxxxxxxxxxxxxxxxx????xx?????xxxxxx");
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#else // !GAMEDLL_S0 || !GAMEDLL_S1 || !GAMEDLL_S2
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p_CClient_Disconnect = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x8B\xC4\x4C\x89\x40\x18\x4C\x89\x48\x20\x53\x56\x57\x48\x81\xEC\x00\x00\x00\x00\x83\xB9\x00\x00\x00\x00\x00\x49\x8B\xF8\x8B\xF2"), "xxxxxxxxxxxxxxxxx????xx?????xxxxx");
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#endif
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p_CClient_Clear = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x40\x53\x41\x56\x41\x57\x48\x83\xEC\x20\x48\x8B\xD9\x48\x89\x74"), "xxxxxxxxxxxxxxxx");
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#if defined (GAMEDLL_S0) || defined (GAMEDLL_S1)
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p_CClient_ProcessStringCmd = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x83\xEC\x28\x4C\x8B\x42\x20"), "xxxxxxxx");
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#elif defined (GAMEDLL_S2) || defined (GAMEDLL_S3)
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p_CClient_ProcessStringCmd = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x48\x89\x6C\x24\x00\x57\x48\x81\xEC\x00\x00\x00\x00\x48\x8B\x7A\x20"), "xxxx?xxxx????xxxx");
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#endif // !GAMEDLL_S0 || !GAMEDLL_S1
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v_CClient_Connect = p_CClient_Connect.RCast<bool (*)(CClient*, const char*, void*, bool, void*, char*, int)>(); /*48 89 5C 24 ?? 48 89 6C 24 ?? 56 57 41 56 48 83 EC 20 41 0F B6 E9*/
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v_CClient_Disconnect = p_CClient_Disconnect.RCast<bool (*)(CClient*, const Reputation_t, const char*, ...)>(); /*48 8B C4 4C 89 40 18 4C 89 48 20 53 56 57 48 81 EC ?? ?? ?? ?? 83 B9 ?? ?? ?? ?? ?? 49 8B F8 8B F2*/
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v_CClient_Clear = p_CClient_Clear.RCast<void (*)(CClient*)>(); /*40 53 41 56 41 57 48 83 EC 20 48 8B D9 48 89 74*/
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v_CClient_ProcessStringCmd = p_CClient_ProcessStringCmd.RCast<bool (*)(CClient*, NET_StringCmd*)>(); /*48 89 6C 24 ?? 57 48 81 EC ?? ?? ?? ?? 48 8B 7A 20*/
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}
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virtual void GetVar(void) const
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{
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g_pClient = g_GameDll.FindPatternSIMD(reinterpret_cast<rsig_t>("\x3B\x15\x00\x00\x00\x00\x7D\x33"), "xx????xx")
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.FindPatternSelf("48 8D 0D", CMemory::Direction::DOWN, 150).ResolveRelativeAddressSelf(0x3, 0x7).RCast<CClient*>();
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}
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virtual void GetCon(void) const { }
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virtual void Attach(void) const { }
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virtual void Detach(void) const { }
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};
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///////////////////////////////////////////////////////////////////////////////
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REGISTER(VClient);
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