mirror of
https://github.com/mirror/processhacker
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wj32
7bd28e4357
git-svn-id: svn://svn.code.sf.net/p/processhacker/code@2304 21ef857c-d57f-4fe0-8362-d861dc6d29cd
94 lines
2.3 KiB
C
94 lines
2.3 KiB
C
/*
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* Process Hacker Library -
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* hooks
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*
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* Copyright (C) 2009 wj32
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*
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* This file is part of Process Hacker.
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*
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* Process Hacker is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Process Hacker is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Process Hacker. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef _HOOK_H
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#define _HOOK_H
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#include "nph.h"
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/* Almost exactly the same as the hooking code in KProcessHacker. */
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#ifdef _X86_
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#define PH_DEFINE_HOOK_CALL(Name, Arguments, Hook) \
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__declspec(naked) Name(Arguments) \
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{ \
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__asm lea eax, Hook \
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__asm mov eax, [eax+PH_HOOK.Function] \
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__asm add eax, 5 \
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__asm push ebp \
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__asm mov ebp, esp \
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__asm jmp eax \
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} \
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#define PH_DEFINE_NT_HOOK_CALL(Name, Arguments, Hook) \
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__declspec(naked) Name(Arguments) \
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{ \
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__asm lea eax, Hook \
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__asm mov edx, [eax+PH_HOOK.Function] \
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__asm add edx, 5 \
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/* Store the system call number in eax. */ \
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__asm mov eax, dword ptr [eax+PH_HOOK.Bytes+1] \
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__asm jmp edx \
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} \
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#else
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#define PH_DEFINE_HOOK_CALL(Name, Arguments, Hook) \
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Name(Arguments) \
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{ \
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RaiseException(STATUS_NOT_SUPPORTED, 0, 0, NULL); \
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return 0; \
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} \
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#define PH_DEFINE_NT_HOOK_CALL(Name, Arguments, Hook) \
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Name(Arguments) \
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{ \
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RaiseException(STATUS_NOT_SUPPORTED, 0, 0, NULL); \
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return 0; \
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} \
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#endif
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typedef struct _PH_HOOK
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{
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PVOID Function;
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PVOID Target;
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BOOLEAN Hooked;
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CHAR Bytes[5];
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} PH_HOOK, *PPH_HOOK;
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NPHAPI VOID PHAPI PhInitializeHook(
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PPH_HOOK Hook,
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PVOID Function,
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PVOID Target
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);
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NPHAPI NTSTATUS PHAPI PhHook(
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PPH_HOOK Hook
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);
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NPHAPI NTSTATUS PHAPI PhUnhook(
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PPH_HOOK Hook
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);
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#endif
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