Source.Python/src/core/modules/memory/memory_hooks.cpp at master · servers-tf/Source.Python · GitHub

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/**

* =============================================================================

* Source Python

* =============================================================================

* This program is free software; you can redistribute it and/or modify it under

* the terms of the GNU General Public License, version 3.0, as published by the

* Free Software Foundation.

* This program is distributed in the hope that it will be useful, but WITHOUT

* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more

* details.

* You should have received a copy of the GNU General Public License along with

* this program. If not, see <http://www.gnu.org/licenses/>.

* As a special exception, the Source Python Team gives you permission

* to link the code of this program (as well as its derivative works) to

* "Half-Life 2," the "Source Engine," and any Game MODs that run on software

* by the Valve Corporation. You must obey the GNU General Public License in

* all respects for all other code used. Additionally, the Source.Python

* Development Team grants this exception to all derivative works.

// ============================================================================

// >> INCLUDES

// ============================================================================

#include "memory_hooks.h"

#include "memory_utilities.h"

#include "memory_pointer.h"

#include "utilities/wrap_macros.h"

#include "utilities/sp_util.h"

#include "boost/python.hpp"

using namespace boost::python;

// ============================================================================

// >> GLOBAL VARIABLES

// ============================================================================

// g_mapCallbacks[<CHook *>][<HookType_t>] -> [<object>, <object>, ...]

std::map<CHook *, std::map<HookType_t, std::list<object> > > g_mapCallbacks;

bool g_HooksDisabled;

// ============================================================================

// >> HELPER FUNCTIONS

// ============================================================================

template<class T>

void SetReturnValue(CHook* pHook, object value)

{

T val = extract<T>(value);

pHook->SetReturnValue<T>(val);

}

template<class T>

object GetReturnValue(CHook* pHook)

{

return object(pHook->GetReturnValue<T>());

}

template<class T>

void SetArgument(CHook* pHook, int iIndex, object value)

{

T val = extract<T>(value);

pHook->SetArgument<T>(iIndex, val);

}

template<class T>

object GetArgument(CHook* pHook, int iIndex)

{

return object(pHook->GetArgument<T>(iIndex));

}

// ============================================================================

// >> SP_HookHandler

// ============================================================================

bool SP_HookHandler(HookType_t eHookType, CHook* pHook)

{

if (g_HooksDisabled)

return false;

std::list<object> callbacks = g_mapCallbacks[pHook][eHookType];

// No need to do all this stuff, if there is no callback registered

if (callbacks.empty())

return false;

object retval;

if (eHookType == HOOKTYPE_POST)

{

switch(pHook->m_pCallingConvention->m_returnType)

{

case DATA_TYPE_VOID: retval = object(); break;

case DATA_TYPE_BOOL: retval = GetReturnValue<bool>(pHook); break;

case DATA_TYPE_CHAR: retval = GetReturnValue<char>(pHook); break;

case DATA_TYPE_UCHAR: retval = GetReturnValue<unsigned char>(pHook); break;

case DATA_TYPE_SHORT: retval = GetReturnValue<short>(pHook); break;

case DATA_TYPE_USHORT: retval = GetReturnValue<unsigned short>(pHook); break;

case DATA_TYPE_INT: retval = GetReturnValue<int>(pHook); break;

case DATA_TYPE_UINT: retval = GetReturnValue<unsigned int>(pHook); break;

case DATA_TYPE_LONG: retval = GetReturnValue<long>(pHook); break;

case DATA_TYPE_ULONG: retval = GetReturnValue<unsigned long>(pHook); break;

case DATA_TYPE_LONG_LONG: retval = GetReturnValue<long long>(pHook); break;

case DATA_TYPE_ULONG_LONG: retval = GetReturnValue<unsigned long long>(pHook); break;

case DATA_TYPE_FLOAT: retval = GetReturnValue<float>(pHook); break;

case DATA_TYPE_DOUBLE: retval = GetReturnValue<double>(pHook); break;

case DATA_TYPE_POINTER: retval = object(CPointer(pHook->GetReturnValue<unsigned long>())); break;

case DATA_TYPE_STRING: retval = GetReturnValue<const char *>(pHook); break;

default: BOOST_RAISE_EXCEPTION(PyExc_TypeError, "Unknown type.");

}

CStackData stackdata = CStackData(pHook);

bool bOverride = false;

for (std::list<object>::iterator it=callbacks.begin(); it != callbacks.end(); ++it)

{

BEGIN_BOOST_PY()

object pyretval;

if (eHookType == HOOKTYPE_PRE)

pyretval = (*it)(stackdata);

else

pyretval = (*it)(stackdata, retval);

if (!pyretval.is_none())

{

bOverride = true;

switch(pHook->m_pCallingConvention->m_returnType)

{

case DATA_TYPE_VOID: break;

case DATA_TYPE_BOOL: SetReturnValue<bool>(pHook, pyretval); break;

case DATA_TYPE_CHAR: SetReturnValue<char>(pHook, pyretval); break;

case DATA_TYPE_UCHAR: SetReturnValue<unsigned >(pHook, pyretval); break;

case DATA_TYPE_SHORT: SetReturnValue<short>(pHook, pyretval); break;

case DATA_TYPE_USHORT: SetReturnValue<unsigned short>(pHook, pyretval); break;

case DATA_TYPE_INT: SetReturnValue<int>(pHook, pyretval); break;

case DATA_TYPE_UINT: SetReturnValue<unsigned int>(pHook, pyretval); break;

case DATA_TYPE_LONG: SetReturnValue<long>(pHook, pyretval); break;

case DATA_TYPE_ULONG: SetReturnValue<unsigned long>(pHook, pyretval); break;

case DATA_TYPE_LONG_LONG: SetReturnValue<long long>(pHook, pyretval); break;

case DATA_TYPE_ULONG_LONG: SetReturnValue<unsigned long long>(pHook, pyretval); break;

case DATA_TYPE_FLOAT: SetReturnValue<float>(pHook, pyretval); break;

case DATA_TYPE_DOUBLE: SetReturnValue<double>(pHook, pyretval); break;

case DATA_TYPE_POINTER:

{

CPointer* pPtr = ExtractPointer(pyretval);

pHook->SetReturnValue<unsigned long>(pPtr->m_ulAddr);

} break;

case DATA_TYPE_STRING: SetReturnValue<const char*>(pHook, pyretval); break;

default: BOOST_RAISE_EXCEPTION(PyExc_TypeError, "Unknown type.")

}

END_BOOST_PY_NORET()

}

return bOverride;

}

// ============================================================================

// >> CStackData

// ============================================================================

CStackData::CStackData(CHook* pHook)

{

m_pHook = pHook;

}

object CStackData::GetItem(unsigned int iIndex)

{

if (iIndex >= (unsigned int) m_pHook->m_pCallingConvention->m_vecArgTypes.size())

BOOST_RAISE_EXCEPTION(PyExc_IndexError, "Index out of range.")

// Argument already cached?

object retval = m_mapCache[iIndex];

if (retval)

return retval;

switch(m_pHook->m_pCallingConvention->m_vecArgTypes[iIndex])

{

case DATA_TYPE_BOOL: retval = GetArgument<bool>(m_pHook, iIndex); break;

case DATA_TYPE_CHAR: retval = GetArgument<char>(m_pHook, iIndex); break;

case DATA_TYPE_UCHAR: retval = GetArgument<unsigned char>(m_pHook, iIndex); break;

case DATA_TYPE_SHORT: retval = GetArgument<short>(m_pHook, iIndex); break;

case DATA_TYPE_USHORT: retval = GetArgument<unsigned short>(m_pHook, iIndex); break;

case DATA_TYPE_INT: retval = GetArgument<int>(m_pHook, iIndex); break;

case DATA_TYPE_UINT: retval = GetArgument<unsigned int>(m_pHook, iIndex); break;

case DATA_TYPE_LONG: retval = GetArgument<long>(m_pHook, iIndex); break;

case DATA_TYPE_ULONG: retval = GetArgument<unsigned long>(m_pHook, iIndex); break;

case DATA_TYPE_LONG_LONG: retval = GetArgument<long long>(m_pHook, iIndex); break;

case DATA_TYPE_ULONG_LONG: retval = GetArgument<unsigned long long>(m_pHook, iIndex); break;

case DATA_TYPE_FLOAT: retval = GetArgument<float>(m_pHook, iIndex); break;

case DATA_TYPE_DOUBLE: retval = GetArgument<double>(m_pHook, iIndex); break;

case DATA_TYPE_POINTER: retval = object(CPointer(m_pHook->GetArgument<unsigned long>(iIndex))); break;

case DATA_TYPE_STRING: retval = GetArgument<const char *>(m_pHook, iIndex); break;

default: BOOST_RAISE_EXCEPTION(PyExc_TypeError, "Unknown type.") break;

}

m_mapCache[iIndex] = retval;

return retval;

}

void CStackData::SetItem(unsigned int iIndex, object value)

{

if (iIndex >= (unsigned int) m_pHook->m_pCallingConvention->m_vecArgTypes.size())

BOOST_RAISE_EXCEPTION(PyExc_IndexError, "Index out of range.")

// Update cache

m_mapCache[iIndex] = value;

switch(m_pHook->m_pCallingConvention->m_vecArgTypes[iIndex])

{

case DATA_TYPE_BOOL: SetArgument<bool>(m_pHook, iIndex, value); break;

case DATA_TYPE_CHAR: SetArgument<char>(m_pHook, iIndex, value); break;

case DATA_TYPE_UCHAR: SetArgument<unsigned char>(m_pHook, iIndex, value); break;

case DATA_TYPE_SHORT: SetArgument<short>(m_pHook, iIndex, value); break;

case DATA_TYPE_USHORT: SetArgument<unsigned short>(m_pHook, iIndex, value); break;

case DATA_TYPE_INT: SetArgument<int>(m_pHook, iIndex, value); break;

case DATA_TYPE_UINT: SetArgument<unsigned int>(m_pHook, iIndex, value); break;

case DATA_TYPE_LONG: SetArgument<long>(m_pHook, iIndex, value); break;

case DATA_TYPE_ULONG: SetArgument<unsigned long>(m_pHook, iIndex, value); break;

case DATA_TYPE_LONG_LONG: SetArgument<long long>(m_pHook, iIndex, value); break;

case DATA_TYPE_ULONG_LONG: SetArgument<unsigned long long>(m_pHook, iIndex, value); break;

case DATA_TYPE_FLOAT: SetArgument<float>(m_pHook, iIndex, value); break;

case DATA_TYPE_DOUBLE: SetArgument<double>(m_pHook, iIndex, value); break;

case DATA_TYPE_POINTER:

{

CPointer* pPtr = ExtractPointer(value);

SetArgument<unsigned long>(m_pHook, iIndex, object(pPtr->m_ulAddr));

} break;

case DATA_TYPE_STRING: SetArgument<const char *>(m_pHook, iIndex, value); break;

default: BOOST_RAISE_EXCEPTION(PyExc_TypeError, "Unknown type.")

}

Source.Python/src/core/modules/memory/memory_hooks.cpp at master · servers-tf/Source.Python · GitHub

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