rcbot_const_mstr_offset needs updating? Options

[JRob]

I tried playing around with rcbot again and it keeps crashing at

CTeamControlPointRound *CTeamControlPointMaster:: getCurrentRound ()

CBaseEntity *pent = m_ControlPointRounds[m_iCurrentRoundIndex];

So I took a look at what that was and apparently, CTeamControlPointRound is found through dark hackery and the magic number at rcbot_const_mstr_offset.

Can you update this? Or also tell people how to find these offsets?

[JRob]

Any update on this? I am starting to add it myself.

I noticed that you ripped out the sig scanning code from sourcemod, but you removed the symbol resolving code. It looks like you have some parts of it, but it doesn't work.

You can easily get this functionality with just 3 files.

target="_blank">https://github.com/alliedmodders/sourcemod/...MemoryUtils.cpp
target="_blank">https://github.com/alliedmodders/sourcemod/...k/MemoryUtils.h
target="_blank">https://github.com/alliedmodders/sourcemod/...k/sm_symtable.h

You need to edit MemoryUtils.h and remove "using namespace SourceMod" and add

#if defined __linux__
#define PLATFORM_LINUX
#endif

And done...

CODE

    MemoryUtils* sigscan = new MemoryUtils;
    void* server = dlopen("tf/bin/server_srv.so", RTLD_LAZY);
    dlclose(server);
    
#ifdef __linux__
    char* CTeamControlPointMaster_Spawn = (char*)sigscan->ResolveSymbol(server, "_ZN23CTeamControlPointMaster5SpawnEv");
#endif

    if(CTeamControlPointMaster_Spawn)
    {
        int CBaseEntityLength = *(int*)(CTeamControlPointMaster_Spawn + 0x1A) - sizeof(CUtlMap<int, CBaseEntity *>);
        rcbot_const_point_master_offset.SetValue(CBaseEntityLength);
    }

[Cheeseh]

I made a sigscan class which is included and works

bot_sigscan.h

CODE

class CSignatureFunction
{
public:
    CSignatureFunction() { m_func = 0x0; }
private:
    size_t decodeHexString(unsigned char *buffer, size_t maxlength, const char *hexstr);

    bool getLibraryInfo(const void *libPtr, DynLibInfo &lib);

    void *findPattern(const void *libPtr, const char *pattern, size_t len);

    void *findSignature ( void *addrInBase, const char *signature );
protected:
    void findFunc ( CRCBotKeyValueList *kv, const char *pKey, void *pAddrBase, const char *defaultsig );

    void *m_func;
};

// Examples
class CGameRulesObject : public CSignatureFunction
{
public:
    CGameRulesObject(CRCBotKeyValueList *list, void *pAddrBase);

    bool found() { return m_func != NULL; }

    void **getGameRules() { return reinterpret_cast<void **>(m_func); }
};

CGameRulesObject::CGameRulesObject(CRCBotKeyValueList *list, void *pAddrBase)
{
#ifdef _WIN32
    m_func = NULL;
#else
    findFunc(list, "g_pGameRules", pAddrBase, "@g_pGameRules");
#endif
}

void CSignatureFunction :: findFunc ( CRCBotKeyValueList *kv, const char*pKey, void *pAddrBase, const char *defaultsig )
{
    char *sig = NULL;

    if ( kv->getString(pKey,&sig) && sig )
        m_func = findSignature(pAddrBase,sig);
    else
        m_func = findSignature(pAddrBase,defaultsig);
}

// Sourcemod - Metamod - Allied Modders.net
void *CSignatureFunction::findSignature ( void *addrInBase, const char *signature )
{
    // First, preprocess the signature
    unsigned char real_sig[511];

    size_t real_bytes;

    real_bytes = decodeHexString(real_sig, sizeof(real_sig), signature);

    if (real_bytes >= 1)
    {
        return findPattern(addrInBase, (char*) real_sig, real_bytes);
    }

    return NULL;
}

CODE

CGameRulesObject *g_pGameRules_Obj;
...
g_pGameRules_Obj = new CGameRulesObject(pKVL, gameServerFactory);

I'll translate it into using this class for next version, cheers

PS , got a signature for windows?

[JRob]

Unless you changed it recently, the sigscan class you have doesn't resolve linux symbols which never change and is much better than a sigscan.

The Windows signature I presume would be the same one as the Linux sig scan I proposed earlier.

I made a sigscan class which is included and works

bot_sigscan.h

CODE

class CSignatureFunction
{
public:
    CSignatureFunction() { m_func = 0x0; }
private:
    size_t decodeHexString(unsigned char *buffer, size_t maxlength, const char *hexstr);

    bool getLibraryInfo(const void *libPtr, DynLibInfo &lib);

    void *findPattern(const void *libPtr, const char *pattern, size_t len);

    void *findSignature ( void *addrInBase, const char *signature );
protected:
    void findFunc ( CRCBotKeyValueList *kv, const char *pKey, void *pAddrBase, const char *defaultsig );

    void *m_func;
};

// Examples
class CGameRulesObject : public CSignatureFunction
{
public:
    CGameRulesObject(CRCBotKeyValueList *list, void *pAddrBase);

    bool found() { return m_func != NULL; }

    void **getGameRules() { return reinterpret_cast<void **>(m_func); }
};

CGameRulesObject::CGameRulesObject(CRCBotKeyValueList *list, void *pAddrBase)
{
#ifdef _WIN32
    m_func = NULL;
#else
    findFunc(list, "g_pGameRules", pAddrBase, "@g_pGameRules");
#endif
}

void CSignatureFunction :: findFunc ( CRCBotKeyValueList *kv, const char*pKey, void *pAddrBase, const char *defaultsig )
{
    char *sig = NULL;

    if ( kv->getString(pKey,&sig) && sig )
        m_func = findSignature(pAddrBase,sig);
    else
        m_func = findSignature(pAddrBase,defaultsig);
}

// Sourcemod - Metamod - Allied Modders.net
void *CSignatureFunction::findSignature ( void *addrInBase, const char *signature )
{
    // First, preprocess the signature
    unsigned char real_sig[511];

    size_t real_bytes;

    real_bytes = decodeHexString(real_sig, sizeof(real_sig), signature);

    if (real_bytes >= 1)
    {
        return findPattern(addrInBase, (char*) real_sig, real_bytes);
    }

    return NULL;
}

CODE

CGameRulesObject *g_pGameRules_Obj;
...
g_pGameRules_Obj = new CGameRulesObject(pKVL, gameServerFactory);

I'll translate it into using this class for next version, cheers

PS , got a signature for windows?