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450 lines (370 loc) · 12 KB
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/**
* =============================================================================
* Source Python
* Copyright (C) 2012 Source Python Development Team. All rights reserved.
* =============================================================================
*
* 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 <stdlib.h>
#include <string>
#include "dyncall.h"
#include "dyncall_signature.h"
#include "memory_hooks.h"
#include "memory_tools.h"
#include "utility/wrap_macros.h"
#include "utility/sp_util.h"
DCCallVM* g_pCallVM = dcNewCallVM(4096);
extern std::map<CHook *, std::map<DynamicHooks::HookType_t, std::list<PyObject *> > > g_mapCallbacks;
CHookManager* g_pHookMngr = new CHookManager;
//-----------------------------------------------------------------------------
// CPointer class
//-----------------------------------------------------------------------------
CPointer::CPointer(unsigned long ulAddr /* = 0 */)
{
m_ulAddr = ulAddr;
}
CPointer* CPointer::add(int iValue)
{
return new CPointer(m_ulAddr + iValue);
}
CPointer* CPointer::sub(int iValue)
{
return add(-iValue);
}
const char * CPointer::get_string(int iOffset /* = 0 */, bool bIsPtr /* = true */)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Pointer is NULL.")
if (bIsPtr)
return get<char *>(iOffset);
return (char *) (m_ulAddr + iOffset);
}
void CPointer::set_string(char* szText, int iSize /* = 0 */, int iOffset /* = 0 */, bool bIsPtr /* = true */)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Pointer is NULL.")
if (!iSize)
{
iSize = UTIL_GetMemSize((void *) (m_ulAddr + iOffset));
if(!iSize)
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Unable to retrieve size of address.")
}
if ((int ) strlen(szText) > iSize)
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "String exceeds size of memory block.")
if (bIsPtr)
set<char *>(szText, iOffset);
else
strcpy((char *) (m_ulAddr + iOffset), szText);
}
CPointer* CPointer::get_ptr(int iOffset /* = 0 */)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Pointer is NULL.")
return new CPointer(*(unsigned long *) (m_ulAddr + iOffset));
}
void CPointer::set_ptr(CPointer* ptr, int iOffset /* = 0 */)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Pointer is NULL.")
*(unsigned long *) m_ulAddr = ptr->get_address();
}
CPointer* CPointer::get_virtual_func(int iIndex, bool bPlatformCheck /* = true */)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Pointer is NULL.")
#ifdef __linux__
if (bPlatformCheck)
iIndex++;
#endif
void** vtable = *(void ***) m_ulAddr;
if (!vtable)
return new CPointer();
return new CPointer((unsigned long) vtable[iIndex]);
}
CFunction* CPointer::make_function(Convention_t eConv, char* szParams)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Pointer is NULL.")
return new CFunction(m_ulAddr, eConv, szParams);
}
// DynCall
void CPointer::reset_vm()
{
dcReset(g_pCallVM);
}
void CPointer::set_mode(int iMode)
{
dcMode(g_pCallVM, iMode);
}
void CPointer::set_arg_bool(bool value)
{
dcArgBool(g_pCallVM, value);
}
void CPointer::set_arg_char(char value)
{
dcArgChar(g_pCallVM, value);
}
void CPointer::set_arg_uchar(unsigned char value)
{
dcArgChar(g_pCallVM, value);
}
void CPointer::set_arg_short(short value)
{
dcArgShort(g_pCallVM, value);
}
void CPointer::set_arg_ushort(unsigned short value)
{
dcArgShort(g_pCallVM, value);
}
void CPointer::set_arg_int(int value)
{
dcArgInt(g_pCallVM, value);
}
void CPointer::set_arg_uint(unsigned int value)
{
dcArgInt(g_pCallVM, value);
}
void CPointer::set_arg_long(long value)
{
dcArgLong(g_pCallVM, value);
}
void CPointer::set_arg_ulong(unsigned long value)
{
dcArgLong(g_pCallVM, value);
}
void CPointer::set_arg_long_long(long long value)
{
dcArgLongLong(g_pCallVM, value);
}
void CPointer::set_arg_ulong_long(unsigned long long value)
{
dcArgLongLong(g_pCallVM, value);
}
void CPointer::set_arg_float(float value)
{
dcArgFloat(g_pCallVM, value);
}
void CPointer::set_arg_double(double value)
{
dcArgDouble(g_pCallVM, value);
}
void CPointer::set_arg_pointer(object value)
{
unsigned long ptr = ExtractPyPtr(value);
dcArgPointer(g_pCallVM, ptr);
}
void CPointer::set_arg_string(char* value)
{
dcArgPointer(g_pCallVM, (unsigned long) value);
}
void CPointer::call_void()
{
dcCallVoid(g_pCallVM, m_ulAddr);
}
bool CPointer::call_bool()
{
return dcCallBool(g_pCallVM, m_ulAddr);
}
char CPointer::call_char()
{
return dcCallChar(g_pCallVM, m_ulAddr);
}
unsigned char CPointer::call_uchar()
{
return dcCallChar(g_pCallVM, m_ulAddr);
}
short CPointer::call_short()
{
return dcCallShort(g_pCallVM, m_ulAddr);
}
unsigned short CPointer::call_ushort()
{
return dcCallShort(g_pCallVM, m_ulAddr);
}
int CPointer::call_int()
{
return dcCallInt(g_pCallVM, m_ulAddr);
}
unsigned int CPointer::call_uint()
{
return dcCallInt(g_pCallVM, m_ulAddr);
}
long CPointer::call_long()
{
return dcCallLong(g_pCallVM, m_ulAddr);
}
unsigned long CPointer::call_ulong()
{
return dcCallLong(g_pCallVM, m_ulAddr);
}
long long CPointer::call_long_long()
{
return dcCallLongLong(g_pCallVM, m_ulAddr);
}
unsigned long long CPointer::call_ulong_long()
{
return dcCallLongLong(g_pCallVM, m_ulAddr);
}
float CPointer::call_float()
{
return dcCallFloat(g_pCallVM, m_ulAddr);
}
double CPointer::call_double()
{
return dcCallDouble(g_pCallVM, m_ulAddr);
}
CPointer* CPointer::call_pointer()
{
return new CPointer(dcCallPointer(g_pCallVM, m_ulAddr));
}
const char* CPointer::call_string()
{
return (const char *) dcCallPointer(g_pCallVM, m_ulAddr);
}
//-----------------------------------------------------------------------------
// CFunction class
//-----------------------------------------------------------------------------
CFunction::CFunction(unsigned long ulAddr, Convention_t eConv, char* szParams)
{
m_ulAddr = ulAddr;
m_eConv = eConv;
m_szParams = szParams;
}
object CFunction::__call__(object args)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Function pointer is NULL.")
dcReset(g_pCallVM);
dcMode(g_pCallVM, GetDynCallConvention(m_eConv));
char* ptr = (char *) m_szParams;
int pos = 0;
char ch;
while ((ch = *ptr) != '\0' && ch != ')')
{
if (ch == DC_SIGCHAR_VOID)
{
ptr++;
break;
}
object arg = args[pos];
switch(ch)
{
case DC_SIGCHAR_BOOL: dcArgBool(g_pCallVM, extract<bool>(arg)); break;
case DC_SIGCHAR_CHAR: dcArgChar(g_pCallVM, extract<char>(arg)); break;
case DC_SIGCHAR_UCHAR: dcArgChar(g_pCallVM, extract<unsigned char>(arg)); break;
case DC_SIGCHAR_SHORT: dcArgShort(g_pCallVM, extract<short>(arg)); break;
case DC_SIGCHAR_USHORT: dcArgShort(g_pCallVM, extract<unsigned short>(arg)); break;
case DC_SIGCHAR_INT: dcArgInt(g_pCallVM, extract<int>(arg)); break;
case DC_SIGCHAR_UINT: dcArgInt(g_pCallVM, extract<unsigned int>(arg)); break;
case DC_SIGCHAR_LONG: dcArgLong(g_pCallVM, extract<long>(arg)); break;
case DC_SIGCHAR_ULONG: dcArgLong(g_pCallVM, extract<unsigned long>(arg)); break;
case DC_SIGCHAR_LONGLONG: dcArgLongLong(g_pCallVM, extract<long long>(arg)); break;
case DC_SIGCHAR_ULONGLONG: dcArgLongLong(g_pCallVM, extract<unsigned long long>(arg)); break;
case DC_SIGCHAR_FLOAT: dcArgFloat(g_pCallVM, extract<float>(arg)); break;
case DC_SIGCHAR_DOUBLE: dcArgDouble(g_pCallVM, extract<double>(arg)); break;
case DC_SIGCHAR_POINTER: dcArgPointer(g_pCallVM, ExtractPyPtr(arg)); break;
case DC_SIGCHAR_STRING: dcArgPointer(g_pCallVM, (unsigned long) (void *) extract<char *>(arg)); break;
default: BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Unknown parameter type.")
}
pos++; ptr++;
}
if (pos != len(args))
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "String parameter count does not equal with length of tuple.")
if (ch == '\0')
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "String parameter has no return type.")
switch(*++ptr)
{
case DC_SIGCHAR_VOID: dcCallVoid(g_pCallVM, m_ulAddr); break;
case DC_SIGCHAR_BOOL: return object(dcCallBool(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_CHAR: return object(dcCallChar(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_UCHAR: return object((unsigned char) dcCallChar(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_SHORT: return object(dcCallShort(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_USHORT: return object((unsigned short) dcCallShort(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_INT: return object(dcCallInt(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_UINT: return object((unsigned int) dcCallInt(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_LONG: return object(dcCallLong(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_ULONG: return object((unsigned long) dcCallLong(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_LONGLONG: return object(dcCallLongLong(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_ULONGLONG: return object((unsigned long long) dcCallLongLong(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_FLOAT: return object(dcCallFloat(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_DOUBLE: return object(dcCallDouble(g_pCallVM, m_ulAddr));
case DC_SIGCHAR_POINTER: return object(CPointer(dcCallPointer(g_pCallVM, m_ulAddr)));
case DC_SIGCHAR_STRING: return object((const char *) dcCallPointer(g_pCallVM, m_ulAddr));
default: BOOST_RAISE_EXCEPTION(PyExc_TypeError, "Unknown return type.")
}
return object();
}
object CFunction::call_trampoline(object args)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Function pointer is NULL.")
CHook* pHook = g_pHookMngr->FindHook((void *) m_ulAddr);
if (!pHook)
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Function was not hooked.")
return CFunction((unsigned long) pHook->m_pTrampoline, m_eConv, m_szParams).__call__(args);
}
void CFunction::add_hook(DynamicHooks::HookType_t eType, PyObject* pCallable)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Function pointer is NULL.")
CHook* pHook = g_pHookMngr->HookFunction((void *) m_ulAddr, m_eConv, m_szParams);
pHook->AddCallback(eType, (void *) &SP_HookHandler);
g_mapCallbacks[pHook][eType].push_back(pCallable);
}
void CFunction::remove_hook(DynamicHooks::HookType_t eType, PyObject* pCallable)
{
if (!is_valid())
BOOST_RAISE_EXCEPTION(PyExc_ValueError, "Function pointer is NULL.")
CHook* pHook = g_pHookMngr->FindHook((void *) m_ulAddr);
if (!pHook)
return;
g_mapCallbacks[pHook][eType].remove(pCallable);
}
void CFunction::add_pre_hook(PyObject* pCallable)
{
add_hook(HOOKTYPE_PRE, pCallable);
}
void CFunction::add_post_hook(PyObject* pCallable)
{
add_hook(HOOKTYPE_POST, pCallable);
}
void CFunction::remove_pre_hook(PyObject* pCallable)
{
remove_hook(HOOKTYPE_PRE, pCallable);
}
void CFunction::remove_post_hook(PyObject* pCallable)
{
remove_hook(HOOKTYPE_POST, pCallable);
}
//-----------------------------------------------------------------------------
// Functions
//-----------------------------------------------------------------------------
int get_error()
{
return dcGetError(g_pCallVM);
}
CPointer* alloc(int iSize)
{
return new CPointer((unsigned long) UTIL_Alloc(iSize));
}