725 lines
22 KiB
C++
Executable File
725 lines
22 KiB
C++
Executable File
//////////////////////////////////////////////////////////////////////////////
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//
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// Module Enumeration Functions (modules.cpp of detours.lib)
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//
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// Microsoft Research Detours Package, Version 2.1.
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// Module enumeration functions.
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//
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#include <windows.h>
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#if (_MSC_VER < 1310)
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#else
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#include <strsafe.h>
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#endif
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//#define DETOUR_DEBUG 1
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#define DETOURS_INTERNAL
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#include "detours.h"
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//////////////////////////////////////////////////////////////////////////////
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//
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#ifndef _STRSAFE_H_INCLUDED_
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static inline HRESULT StringCchLengthA(const char* psz, size_t cchMax, size_t* pcch)
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{
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HRESULT hr = S_OK;
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size_t cchMaxPrev = cchMax;
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if (cchMax > 2147483647)
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{
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return ERROR_INVALID_PARAMETER;
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}
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while (cchMax && (*psz != '\0'))
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{
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psz++;
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cchMax--;
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}
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if (cchMax == 0)
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{
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// the string is longer than cchMax
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hr = ERROR_INVALID_PARAMETER;
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}
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if (SUCCEEDED(hr) && pcch)
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{
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*pcch = cchMaxPrev - cchMax;
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}
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return hr;
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}
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static inline HRESULT StringCchCopyA(char* pszDest, size_t cchDest, const char* pszSrc)
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{
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HRESULT hr = S_OK;
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if (cchDest == 0)
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{
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// can not null terminate a zero-byte dest buffer
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hr = ERROR_INVALID_PARAMETER;
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}
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else
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{
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while (cchDest && (*pszSrc != '\0'))
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{
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*pszDest++ = *pszSrc++;
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cchDest--;
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}
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if (cchDest == 0)
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{
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// we are going to truncate pszDest
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pszDest--;
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hr = ERROR_INVALID_PARAMETER;
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}
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*pszDest= '\0';
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}
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return hr;
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}
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static inline HRESULT StringCchCatA(char* pszDest, size_t cchDest, const char* pszSrc)
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{
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HRESULT hr;
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size_t cchDestCurrent;
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if (cchDest > 2147483647)
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{
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return ERROR_INVALID_PARAMETER;
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}
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hr = StringCchLengthA(pszDest, cchDest, &cchDestCurrent);
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if (SUCCEEDED(hr))
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{
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hr = StringCchCopyA(pszDest + cchDestCurrent,
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cchDest - cchDestCurrent,
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pszSrc);
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}
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return hr;
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}
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#endif
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//////////////////////////////////////////////////////////////////////////////
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//
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const GUID DETOUR_EXE_RESTORE_GUID = {
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0x2ed7a3ff, 0x3339, 0x4a8d,
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{ 0x80, 0x5c, 0xd4, 0x98, 0x15, 0x3f, 0xc2, 0x8f }};
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//////////////////////////////////////////////////////////////////////////////
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//
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PDETOUR_SYM_INFO DetourLoadImageHlp(VOID)
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{
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static DETOUR_SYM_INFO symInfo;
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static PDETOUR_SYM_INFO pSymInfo = NULL;
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static BOOL failed = false;
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if (failed) {
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return NULL;
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}
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if (pSymInfo != NULL) {
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return pSymInfo;
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}
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ZeroMemory(&symInfo, sizeof(symInfo));
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// Create a real handle to the process.
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#if 0
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DuplicateHandle(GetCurrentProcess(),
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GetCurrentProcess(),
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GetCurrentProcess(),
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&symInfo.hProcess,
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0,
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FALSE,
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DUPLICATE_SAME_ACCESS);
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#else
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symInfo.hProcess = GetCurrentProcess();
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#endif
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symInfo.hDbgHelp = LoadLibraryA("dbghelp.dll");
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if (symInfo.hDbgHelp == NULL) {
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abort:
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failed = true;
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if (symInfo.hDbgHelp != NULL) {
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FreeLibrary(symInfo.hDbgHelp);
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}
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symInfo.pfImagehlpApiVersionEx = NULL;
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symInfo.pfSymInitialize = NULL;
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symInfo.pfSymSetOptions = NULL;
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symInfo.pfSymGetOptions = NULL;
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symInfo.pfSymLoadModule64 = NULL;
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symInfo.pfSymGetModuleInfo64 = NULL;
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symInfo.pfSymFromName = NULL;
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return NULL;
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}
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symInfo.pfImagehlpApiVersionEx
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= (PF_ImagehlpApiVersionEx)GetProcAddress(symInfo.hDbgHelp,
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"ImagehlpApiVersionEx");
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symInfo.pfSymInitialize
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= (PF_SymInitialize)GetProcAddress(symInfo.hDbgHelp, "SymInitialize");
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symInfo.pfSymSetOptions
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= (PF_SymSetOptions)GetProcAddress(symInfo.hDbgHelp, "SymSetOptions");
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symInfo.pfSymGetOptions
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= (PF_SymGetOptions)GetProcAddress(symInfo.hDbgHelp, "SymGetOptions");
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symInfo.pfSymLoadModule64
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= (PF_SymLoadModule64)GetProcAddress(symInfo.hDbgHelp, "SymLoadModule64");
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symInfo.pfSymGetModuleInfo64
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= (PF_SymGetModuleInfo64)GetProcAddress(symInfo.hDbgHelp, "SymGetModuleInfo64");
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symInfo.pfSymFromName
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= (PF_SymFromName)GetProcAddress(symInfo.hDbgHelp, "SymFromName");
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API_VERSION av;
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ZeroMemory(&av, sizeof(av));
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av.MajorVersion = API_VERSION_NUMBER;
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if (symInfo.pfImagehlpApiVersionEx == NULL ||
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symInfo.pfSymInitialize == NULL ||
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symInfo.pfSymLoadModule64 == NULL ||
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symInfo.pfSymGetModuleInfo64 == NULL ||
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symInfo.pfSymFromName == NULL) {
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goto abort;
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}
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symInfo.pfImagehlpApiVersionEx(&av);
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if (av.MajorVersion < API_VERSION_NUMBER) {
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goto abort;
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}
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if (!symInfo.pfSymInitialize(symInfo.hProcess, NULL, FALSE)) {
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// We won't retry the initialize if it fails.
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goto abort;
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}
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if (symInfo.pfSymGetOptions != NULL && symInfo.pfSymSetOptions != NULL) {
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DWORD dw = symInfo.pfSymGetOptions();
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dw &= ~(SYMOPT_CASE_INSENSITIVE |
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SYMOPT_UNDNAME |
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SYMOPT_DEFERRED_LOADS |
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0);
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dw |= (
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#if defined(SYMOPT_EXACT_SYMBOLS)
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SYMOPT_EXACT_SYMBOLS |
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#endif
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#if defined(SYMOPT_NO_UNQUALIFIED_LOADS)
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SYMOPT_NO_UNQUALIFIED_LOADS |
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#endif
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SYMOPT_DEFERRED_LOADS |
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#if defined(SYMOPT_FAIL_CRITICAL_ERRORS)
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SYMOPT_FAIL_CRITICAL_ERRORS |
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#endif
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#if defined(SYMOPT_INCLUDE_32BIT_MODULES)
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SYMOPT_INCLUDE_32BIT_MODULES |
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#endif
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0);
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symInfo.pfSymSetOptions(dw);
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}
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pSymInfo = &symInfo;
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return pSymInfo;
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}
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PVOID WINAPI DetourFindFunction(PCSTR pszModule, PCSTR pszFunction)
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{
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/////////////////////////////////////////////// First, try GetProcAddress.
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//
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HMODULE hModule = LoadLibraryA(pszModule);
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if (hModule == NULL) {
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return NULL;
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}
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PBYTE pbCode = (PBYTE)GetProcAddress(hModule, pszFunction);
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if (pbCode) {
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return pbCode;
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}
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////////////////////////////////////////////////////// Then try ImageHelp.
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//
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DETOUR_TRACE(("DetourFindFunction(%s, %s)\n", pszModule, pszFunction));
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PDETOUR_SYM_INFO pSymInfo = DetourLoadImageHlp();
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if (pSymInfo == NULL) {
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DETOUR_TRACE(("DetourLoadImageHlp failed: %d\n",
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GetLastError()));
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return NULL;
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}
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if (pSymInfo->pfSymLoadModule64(pSymInfo->hProcess, NULL,
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(PCHAR)pszModule, NULL,
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(DWORD64)hModule, 0) == 0) {
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DETOUR_TRACE(("SymLoadModule64(%p) failed: %d\n",
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pSymInfo->hProcess, GetLastError()));
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// We don't stop because some version of dbghelp fail secondary calls.
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//return NULL;
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}
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HRESULT hrRet;
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CHAR szFullName[512];
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IMAGEHLP_MODULE64 modinfo;
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ZeroMemory(&modinfo, sizeof(modinfo));
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modinfo.SizeOfStruct = sizeof(modinfo);
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if (!pSymInfo->pfSymGetModuleInfo64(pSymInfo->hProcess, (DWORD64)hModule, &modinfo)) {
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DETOUR_TRACE(("SymGetModuleInfo64(%p, %p) failed: %d\n",
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pSymInfo->hProcess, hModule, GetLastError()));
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return NULL;
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}
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hrRet = StringCchCopyA(szFullName, sizeof(szFullName)/sizeof(CHAR), modinfo.ModuleName);
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if (FAILED(hrRet)) {
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DETOUR_TRACE(("StringCchCopyA failed: %08x\n", hrRet));
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return NULL;
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}
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hrRet = StringCchCatA(szFullName, sizeof(szFullName)/sizeof(CHAR), "!");
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if (FAILED(hrRet)) {
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DETOUR_TRACE(("StringCchCatA failed: %08x\n", hrRet));
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return NULL;
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}
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hrRet = StringCchCatA(szFullName, sizeof(szFullName)/sizeof(CHAR), pszFunction);
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if (FAILED(hrRet)) {
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DETOUR_TRACE(("StringCchCatA failed: %08x\n", hrRet));
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return NULL;
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}
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struct CFullSymbol : SYMBOL_INFO {
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CHAR szRestOfName[512];
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} symbol;
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ZeroMemory(&symbol, sizeof(symbol));
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//symbol.ModBase = (ULONG64)hModule;
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symbol.SizeOfStruct = sizeof(SYMBOL_INFO);
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#ifdef DBHLPAPI
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symbol.MaxNameLen = sizeof(symbol.szRestOfName)/sizeof(symbol.szRestOfName[0]);
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#else
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symbol.MaxNameLength = sizeof(symbol.szRestOfName)/sizeof(symbol.szRestOfName[0]);
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#endif
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if (!pSymInfo->pfSymFromName(pSymInfo->hProcess, szFullName, &symbol)) {
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DETOUR_TRACE(("SymFromName(%s) failed: %d\n", szFullName, GetLastError()));
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return NULL;
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}
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#ifdef DETOURS_IA64
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// On the IA64, we get a raw code pointer from the symbol engine
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// and have to convert it to a wrapped [code pointer, global pointer].
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//
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PPLABEL_DESCRIPTOR pldEntry = (PPLABEL_DESCRIPTOR)DetourGetEntryPoint(hModule);
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PPLABEL_DESCRIPTOR pldSymbol = new PLABEL_DESCRIPTOR;
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pldSymbol->EntryPoint = symbol.Address;
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pldSymbol->GlobalPointer = pldEntry->GlobalPointer;
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return (PBYTE)pldSymbol;
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#else
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return (PBYTE)symbol.Address;
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#endif
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}
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//////////////////////////////////////////////////// Module Image Functions.
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//
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HMODULE WINAPI DetourEnumerateModules(HMODULE hModuleLast)
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{
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PBYTE pbLast;
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if (hModuleLast == NULL) {
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pbLast = (PBYTE)0x10000;
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}
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else {
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pbLast = (PBYTE)hModuleLast + 0x10000;
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}
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MEMORY_BASIC_INFORMATION mbi;
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ZeroMemory(&mbi, sizeof(mbi));
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// Find the next memory region that contains a mapped PE image.
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//
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for (;; pbLast = (PBYTE)mbi.BaseAddress + mbi.RegionSize) {
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if (VirtualQuery((PVOID)pbLast, &mbi, sizeof(mbi)) <= 0) {
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break;
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}
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// Skip uncommitted regions and guard pages.
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//
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if ((mbi.State != MEM_COMMIT) || (mbi.Protect & PAGE_GUARD)) {
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continue;
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}
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__try {
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PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)pbLast;
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if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
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continue;
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}
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PIMAGE_NT_HEADERS pNtHeader = (PIMAGE_NT_HEADERS)((PBYTE)pDosHeader +
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pDosHeader->e_lfanew);
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if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
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continue;
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}
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return (HMODULE)pDosHeader;
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}
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__except(EXCEPTION_EXECUTE_HANDLER) {
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return NULL;
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}
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}
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return NULL;
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}
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PVOID WINAPI DetourGetEntryPoint(HMODULE hModule)
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{
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PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hModule;
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if (hModule == NULL) {
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pDosHeader = (PIMAGE_DOS_HEADER)GetModuleHandle(NULL);
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}
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__try {
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if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
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SetLastError(ERROR_BAD_EXE_FORMAT);
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return NULL;
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}
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PIMAGE_NT_HEADERS pNtHeader = (PIMAGE_NT_HEADERS)((PBYTE)pDosHeader +
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pDosHeader->e_lfanew);
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if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
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SetLastError(ERROR_INVALID_EXE_SIGNATURE);
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return NULL;
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}
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if (pNtHeader->FileHeader.SizeOfOptionalHeader == 0) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return NULL;
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}
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SetLastError(NO_ERROR);
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return ((PBYTE)pDosHeader) +
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pNtHeader->OptionalHeader.AddressOfEntryPoint;
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}
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__except(EXCEPTION_EXECUTE_HANDLER) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return NULL;
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}
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}
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ULONG WINAPI DetourGetModuleSize(HMODULE hModule)
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{
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PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hModule;
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if (hModule == NULL) {
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pDosHeader = (PIMAGE_DOS_HEADER)GetModuleHandle(NULL);
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}
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__try {
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if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
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SetLastError(ERROR_BAD_EXE_FORMAT);
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return NULL;
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}
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PIMAGE_NT_HEADERS pNtHeader = (PIMAGE_NT_HEADERS)((PBYTE)pDosHeader +
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pDosHeader->e_lfanew);
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if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
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SetLastError(ERROR_INVALID_EXE_SIGNATURE);
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return NULL;
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}
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if (pNtHeader->FileHeader.SizeOfOptionalHeader == 0) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return NULL;
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}
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SetLastError(NO_ERROR);
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return (pNtHeader->OptionalHeader.SizeOfImage);
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}
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__except(EXCEPTION_EXECUTE_HANDLER) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return NULL;
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}
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}
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static inline PBYTE RvaAdjust(PIMAGE_DOS_HEADER pDosHeader, DWORD raddr)
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{
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if (raddr != NULL) {
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return ((PBYTE)pDosHeader) + raddr;
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}
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return NULL;
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}
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BOOL WINAPI DetourEnumerateExports(HMODULE hModule,
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PVOID pContext,
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PF_DETOUR_ENUMERATE_EXPORT_CALLBACK pfExport)
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{
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PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hModule;
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if (hModule == NULL) {
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pDosHeader = (PIMAGE_DOS_HEADER)GetModuleHandle(NULL);
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}
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__try {
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if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
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SetLastError(ERROR_BAD_EXE_FORMAT);
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return NULL;
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}
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PIMAGE_NT_HEADERS pNtHeader = (PIMAGE_NT_HEADERS)((PBYTE)pDosHeader +
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pDosHeader->e_lfanew);
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if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
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SetLastError(ERROR_INVALID_EXE_SIGNATURE);
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return FALSE;
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}
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if (pNtHeader->FileHeader.SizeOfOptionalHeader == 0) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return FALSE;
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}
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PIMAGE_EXPORT_DIRECTORY pExportDir
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= (PIMAGE_EXPORT_DIRECTORY)
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RvaAdjust(pDosHeader,
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pNtHeader->OptionalHeader
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.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress);
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if (pExportDir == NULL) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return FALSE;
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}
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PDWORD pdwFunctions = (PDWORD)RvaAdjust(pDosHeader, pExportDir->AddressOfFunctions);
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PDWORD pdwNames = (PDWORD)RvaAdjust(pDosHeader, pExportDir->AddressOfNames);
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PWORD pwOrdinals = (PWORD)RvaAdjust(pDosHeader, pExportDir->AddressOfNameOrdinals);
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for (DWORD nFunc = 0; nFunc < pExportDir->NumberOfFunctions; nFunc++) {
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PBYTE pbCode = (pdwFunctions != NULL)
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? (PBYTE)RvaAdjust(pDosHeader, pdwFunctions[nFunc]) : NULL;
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PCHAR pszName = NULL;
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for (DWORD n = 0; n < pExportDir->NumberOfNames; n++) {
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if (pwOrdinals[n] == nFunc) {
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pszName = (pdwNames != NULL)
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? (PCHAR)RvaAdjust(pDosHeader, pdwNames[n]) : NULL;
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break;
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}
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}
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ULONG nOrdinal = pExportDir->Base + nFunc;
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if (!pfExport(pContext, nOrdinal, pszName, pbCode)) {
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break;
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}
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}
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SetLastError(NO_ERROR);
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return TRUE;
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}
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__except(EXCEPTION_EXECUTE_HANDLER) {
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SetLastError(ERROR_EXE_MARKED_INVALID);
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return NULL;
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}
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}
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static PDETOUR_LOADED_BINARY WINAPI GetPayloadSectionFromModule(HMODULE hModule)
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{
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PIMAGE_DOS_HEADER pDosHeader = (PIMAGE_DOS_HEADER)hModule;
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if (hModule == NULL) {
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pDosHeader = (PIMAGE_DOS_HEADER)GetModuleHandle(NULL);
|
|
}
|
|
|
|
__try {
|
|
if (pDosHeader->e_magic != IMAGE_DOS_SIGNATURE) {
|
|
SetLastError(ERROR_BAD_EXE_FORMAT);
|
|
return NULL;
|
|
}
|
|
|
|
PIMAGE_NT_HEADERS pNtHeader = (PIMAGE_NT_HEADERS)((PBYTE)pDosHeader +
|
|
pDosHeader->e_lfanew);
|
|
if (pNtHeader->Signature != IMAGE_NT_SIGNATURE) {
|
|
SetLastError(ERROR_INVALID_EXE_SIGNATURE);
|
|
return NULL;
|
|
}
|
|
if (pNtHeader->FileHeader.SizeOfOptionalHeader == 0) {
|
|
SetLastError(ERROR_EXE_MARKED_INVALID);
|
|
return NULL;
|
|
}
|
|
|
|
PIMAGE_SECTION_HEADER pSectionHeaders
|
|
= (PIMAGE_SECTION_HEADER)((PBYTE)pNtHeader
|
|
+ sizeof(pNtHeader->Signature)
|
|
+ sizeof(pNtHeader->FileHeader)
|
|
+ pNtHeader->FileHeader.SizeOfOptionalHeader);
|
|
|
|
for (DWORD n = 0; n < pNtHeader->FileHeader.NumberOfSections; n++) {
|
|
if (strcmp((PCHAR)pSectionHeaders[n].Name, ".detour") == 0) {
|
|
if (pSectionHeaders[n].VirtualAddress == 0 ||
|
|
pSectionHeaders[n].SizeOfRawData == 0) {
|
|
|
|
break;
|
|
}
|
|
|
|
PBYTE pbData = (PBYTE)pDosHeader + pSectionHeaders[n].VirtualAddress;
|
|
DETOUR_SECTION_HEADER *pHeader = (DETOUR_SECTION_HEADER *)pbData;
|
|
if (pHeader->cbHeaderSize < sizeof(DETOUR_SECTION_HEADER) ||
|
|
pHeader->nSignature != DETOUR_SECTION_HEADER_SIGNATURE) {
|
|
|
|
break;
|
|
}
|
|
|
|
if (pHeader->nDataOffset == 0) {
|
|
pHeader->nDataOffset = pHeader->cbHeaderSize;
|
|
}
|
|
SetLastError(NO_ERROR);
|
|
return (PBYTE)pHeader;
|
|
}
|
|
}
|
|
SetLastError(ERROR_EXE_MARKED_INVALID);
|
|
return NULL;
|
|
}
|
|
__except(EXCEPTION_EXECUTE_HANDLER) {
|
|
SetLastError(ERROR_EXE_MARKED_INVALID);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
DWORD WINAPI DetourGetSizeOfPayloads(HMODULE hModule)
|
|
{
|
|
PDETOUR_LOADED_BINARY pBinary = GetPayloadSectionFromModule(hModule);
|
|
if (pBinary == NULL) {
|
|
// Error set by GetPayloadSectonFromModule.
|
|
return 0;
|
|
}
|
|
|
|
__try {
|
|
DETOUR_SECTION_HEADER *pHeader = (DETOUR_SECTION_HEADER *)pBinary;
|
|
if (pHeader->cbHeaderSize < sizeof(DETOUR_SECTION_HEADER) ||
|
|
pHeader->nSignature != DETOUR_SECTION_HEADER_SIGNATURE) {
|
|
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return 0;
|
|
}
|
|
SetLastError(NO_ERROR);
|
|
return pHeader->cbDataSize;
|
|
}
|
|
__except(EXCEPTION_EXECUTE_HANDLER) {
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
PVOID WINAPI DetourFindPayload(HMODULE hModule, REFGUID rguid, DWORD * pcbData)
|
|
{
|
|
PBYTE pbData = NULL;
|
|
if (pcbData) {
|
|
*pcbData = 0;
|
|
}
|
|
|
|
PDETOUR_LOADED_BINARY pBinary = GetPayloadSectionFromModule(hModule);
|
|
if (pBinary == NULL) {
|
|
// Error set by GetPayloadSectonFromModule.
|
|
return NULL;
|
|
}
|
|
|
|
__try {
|
|
DETOUR_SECTION_HEADER *pHeader = (DETOUR_SECTION_HEADER *)pBinary;
|
|
if (pHeader->cbHeaderSize < sizeof(DETOUR_SECTION_HEADER) ||
|
|
pHeader->nSignature != DETOUR_SECTION_HEADER_SIGNATURE) {
|
|
|
|
SetLastError(ERROR_INVALID_EXE_SIGNATURE);
|
|
return NULL;
|
|
}
|
|
|
|
PBYTE pbBeg = ((PBYTE)pHeader) + pHeader->nDataOffset;
|
|
PBYTE pbEnd = ((PBYTE)pHeader) + pHeader->cbDataSize;
|
|
|
|
for (pbData = pbBeg; pbData < pbEnd;) {
|
|
DETOUR_SECTION_RECORD *pSection = (DETOUR_SECTION_RECORD *)pbData;
|
|
|
|
if (pSection->guid.Data1 == rguid.Data1 &&
|
|
pSection->guid.Data2 == rguid.Data2 &&
|
|
pSection->guid.Data3 == rguid.Data3 &&
|
|
pSection->guid.Data4[0] == rguid.Data4[0] &&
|
|
pSection->guid.Data4[1] == rguid.Data4[1] &&
|
|
pSection->guid.Data4[2] == rguid.Data4[2] &&
|
|
pSection->guid.Data4[3] == rguid.Data4[3] &&
|
|
pSection->guid.Data4[4] == rguid.Data4[4] &&
|
|
pSection->guid.Data4[5] == rguid.Data4[5] &&
|
|
pSection->guid.Data4[6] == rguid.Data4[6] &&
|
|
pSection->guid.Data4[7] == rguid.Data4[7]) {
|
|
|
|
if (pcbData) {
|
|
*pcbData = pSection->cbBytes - sizeof(*pSection);
|
|
SetLastError(NO_ERROR);
|
|
return (PBYTE)(pSection + 1);
|
|
}
|
|
}
|
|
|
|
pbData = (PBYTE)pSection + pSection->cbBytes;
|
|
}
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return NULL;
|
|
}
|
|
__except(EXCEPTION_EXECUTE_HANDLER) {
|
|
SetLastError(ERROR_INVALID_HANDLE);
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
BOOL WINAPI DetourRestoreAfterWithEx(PVOID pvData, DWORD cbData)
|
|
{
|
|
PDETOUR_EXE_RESTORE pder = (PDETOUR_EXE_RESTORE)pvData;
|
|
|
|
if (pder->cb != sizeof(*pder) || pder->cb > cbData) {
|
|
SetLastError(ERROR_BAD_EXE_FORMAT);
|
|
return FALSE;
|
|
}
|
|
|
|
DWORD dwPermIdh;
|
|
DWORD dwPermInh;
|
|
DWORD dwPermClr;
|
|
DWORD dwOld;
|
|
BOOL fSucceeded = FALSE;
|
|
|
|
if (!VirtualProtect(pder->pidh, sizeof(pder->idh),
|
|
PAGE_EXECUTE_READWRITE, &dwPermIdh)) {
|
|
goto end0;
|
|
}
|
|
if (!VirtualProtect(pder->pinh, sizeof(pder->inh),
|
|
PAGE_EXECUTE_READWRITE, &dwPermInh)) {
|
|
goto end1;
|
|
}
|
|
if (pder->pclrFlags != NULL) {
|
|
if (!VirtualProtect(pder->pclrFlags, sizeof(pder->clrFlags),
|
|
PAGE_EXECUTE_READWRITE, &dwPermClr)) {
|
|
goto end2;
|
|
}
|
|
}
|
|
|
|
CopyMemory(pder->pidh, &pder->idh, sizeof(pder->idh));
|
|
CopyMemory(pder->pinh, &pder->inh, sizeof(pder->inh));
|
|
|
|
if (pder->pclrFlags != NULL) {
|
|
CopyMemory(pder->pclrFlags, &pder->clrFlags, sizeof(pder->clrFlags));
|
|
}
|
|
fSucceeded = TRUE;
|
|
|
|
if (pder->pclrFlags != NULL) {
|
|
VirtualProtect(pder->pclrFlags, sizeof(pder->clrFlags), dwPermIdh, &dwOld);
|
|
}
|
|
end2:
|
|
VirtualProtect(pder->pinh, sizeof(pder->inh), dwPermInh, &dwOld);
|
|
end1:
|
|
VirtualProtect(pder->pidh, sizeof(pder->idh), dwPermIdh, &dwOld);
|
|
end0:
|
|
return fSucceeded;
|
|
}
|
|
|
|
BOOL WINAPI DetourRestoreAfterWith()
|
|
{
|
|
for (HMODULE hMod = NULL; (hMod = DetourEnumerateModules(hMod)) != NULL;) {
|
|
PVOID pvData;
|
|
DWORD cbData;
|
|
|
|
pvData = DetourFindPayload(hMod, DETOUR_EXE_RESTORE_GUID, &cbData);
|
|
|
|
if (pvData == NULL || cbData == 0) {
|
|
continue;
|
|
}
|
|
|
|
return DetourRestoreAfterWithEx(pvData, cbData);
|
|
}
|
|
SetLastError(ERROR_MOD_NOT_FOUND);
|
|
return FALSE;
|
|
}
|
|
|
|
// End of File
|