可重用函數：類比windows裝載器載入PE檔案

/**描述:     類比windows轉載器載入PE檔案，能更方便的對PE檔案進行處理參數：    szFileName：           PE檔案的路徑返回:    成功則返回PE檔案鏡像在記憶體的首地址，失敗則返回0*/ULONG MapPeFile(TCHAR* szFileName){HANDLE hFile;ULONG numR;IMAGE_DOS_HEADER dosHeader = {0};IMAGE_NT_HEADERS ntHeader;ULONG dwImageSize;    ULONG dwNumOfSections;ULONG dwHeadSize;PIMAGE_SECTION_HEADER pSection;    char* pBase;ULONG nIndex;        hFile = CreateFile(szFileName,    GENERIC_READ | GENERIC_WRITE,   FILE_SHARE_READ | FILE_SHARE_WRITE,                       NULL,   OPEN_EXISTING,   FILE_ATTRIBUTE_NORMAL,   NULL               );if (hFile == INVALID_HANDLE_VALUE){OutputDebugString(_T("開啟檔案失敗!"));return 0;}    ReadFile(hFile,     &dosHeader, sizeof(IMAGE_DOS_HEADER),             &numR, NULL );SetFilePointer(hFile,           dosHeader.e_lfanew,   NULL,   FILE_BEGIN            );ReadFile(hFile,     &ntHeader, sizeof(IMAGE_NT_HEADERS),             &numR, NULL );    dwImageSize = ntHeader.OptionalHeader.SizeOfImage;    dwNumOfSections = ntHeader.FileHeader.NumberOfSections;    dwHeadSize = ntHeader.OptionalHeader.SizeOfHeaders;   pBase =(char*)malloc(dwImageSize);    memset(pBase , 0 , dwImageSize);    SetFilePointer(hFile , 0 , NULL , FILE_BEGIN);ReadFile(hFile, pBase , dwHeadSize ,&numR , NULL);    pSection = (PIMAGE_SECTION_HEADER)(dosHeader.e_lfanew          + sizeof(ntHeader.Signature)        + sizeof(IMAGE_FILE_HEADER)+ ntHeader.FileHeader.SizeOfOptionalHeader+ (ULONG)pBase);    for (nIndex = 0 , pSection ; nIndex < dwNumOfSections ; nIndex++ ,pSection++){   SetFilePointer(hFile , pSection ->PointerToRawData , NULL , FILE_BEGIN);       ReadFile(hFile , &pBase[pSection->VirtualAddress] , pSection->SizeOfRawData ,&numR ,NULL);}CloseHandle(hFile);    return (ULONG)pBase;}