Source code of Windows XP (NT5)
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/*++
Copyright (c) 2000 Microsoft Corporation
Module Name:
ShimHookMacro.h
Abstract:
Shim hooking macros
Notes:
None
History:
11/01/1999 markder Created
01/10/2000 linstev Format to new style
--*/
#ifndef _SHIMHOOKMACRO_H_
#define _SHIMHOOKMACRO_H_
#include <ShimDebug.h>
enum
{
APIHOOK_DllGetClassObject = 0,
APIHOOK_DirectDrawCreate,
APIHOOK_DirectDrawCreateEx,
USERAPIHOOKSTART
};
enum
{
USERCOMHOOKSTART = 0
};
typedef struct tagSHIM_COM_HOOK
{
CLSID* pCLSID;
IID* pIID;
DWORD dwVtblIndex;
PVOID pfnNew;
PVOID pfnOld;
} SHIM_COM_HOOK, *PSHIM_COM_HOOK;
typedef struct tagSHIM_IFACE_FN_MAP
{
PVOID pVtbl;
PVOID pfnNew;
PVOID pfnOld;
PVOID pNext;
} SHIM_IFACE_FN_MAP, *PSHIM_IFACE_FN_MAP;
typedef struct tagSHIM_HOOKED_OBJECT
{
PVOID pThis;
CLSID* pCLSID;
DWORD dwRef;
BOOL bAddRefTrip;
BOOL bClassFactory;
PVOID pNext;
} SHIM_HOOKED_OBJECT, *PSHIM_HOOKED_OBJECT;
// These declarations are needed to hook all known exported APIs that return a COM object.
PVOID LookupOldCOMIntf( PVOID pVtbl, PVOID pfnNew, BOOL bThrowExceptionIfNull );
void DumpCOMHooks();
void InitializeHooks(DWORD fdwReason);
VOID HookObject(IN CLSID *pCLSID, IN REFIID riid, OUT LPVOID *ppv, OUT PSHIM_HOOKED_OBJECT pOb, IN BOOL bClassFactory );
extern void InitHooks(DWORD dwCount);
extern void InitComHooks(DWORD dwCount);
extern HRESULT APIHook_DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID * ppv);
#ifndef LIB_BUILD_FLAG
extern BOOL g_bAPIHooksInited;
extern BOOL g_bHasCOMHooks;
extern PHOOKAPI g_pAPIHooks;
extern PSHIM_COM_HOOK g_pCOMHooks;
extern DWORD g_dwAPIHookCount;
extern DWORD g_dwCOMHookCount;
#else
BOOL g_bAPIHooksInited;
BOOL g_bHasCOMHooks;
PHOOKAPI g_pAPIHooks;
PSHIM_COM_HOOK g_pCOMHooks;
DWORD g_dwAPIHookCount;
DWORD g_dwCOMHookCount;
#endif // LIB_BUILD_FLAG
// Macros for user shims
#define INIT_HOOKS InitHooks
#define INIT_COMHOOKS(module, count) \
ASSERT(g_bAPIHooksInited,"INVALID COMHOOK, INIT_HOOK MACRO MUST BE FIRST!!"); \
DECLARE_APIHOOK(module, DllGetClassObject); \
InitComHooks(count);
#define DECLARE_APIHOOK(module, fn) \
g_pAPIHooks[APIHOOK_##fn].pszModule = #module; \
g_pAPIHooks[APIHOOK_##fn].pszFunctionName = #fn; \
g_pAPIHooks[APIHOOK_##fn].pfnNew = APIHook_##fn; \
DPF(eDbgLevelInfo, "[declare apihook] " #fn "\n");
#define DECLARE_COMHOOK(clsid, iid, intf, vtblndx) \
g_pCOMHooks[COMHOOK_##intf ].pCLSID = (CLSID*) &clsid; \
g_pCOMHooks[COMHOOK_##intf ].pIID = (IID*) &iid; \
g_pCOMHooks[COMHOOK_##intf ].dwVtblIndex = vtblndx; \
g_pCOMHooks[COMHOOK_##intf ].pfnNew = COMHook_##intf; \
DPF(eDbgLevelInfo, "[declarecomhook] " #intf "\n");
#define LOOKUP_APIHOOK(fn) \
(*(_pfn_##fn)(g_pAPIHooks[APIHOOK_##fn].pfnOld))
#define LOOKUP_COMHOOK(pThis, fn, bThrowException) \
(*(_pfn_##fn)(LookupOldCOMIntf(*((PVOID *) pThis), COMHook_##fn, bThrowException )))
#endif // _SHIMHOOKMACRO_H_