Win32 API，用於判斷給定的二進制文件（EXE或DLL）是x86，x64還是ia64

Question

我試圖找到一種編程方式來判斷二進制文件是x86，x64還是ia64。

平台：Windows。 語言：c / c ++。

背景：在嘗試加載第三方dll之前，我需要找出它的位數。

感謝任何指針。

Answer 1

對於EXE

使用GetBinaryType（...）

這是 manged exe的同一個問題 。

對於DLL（和EXE）

使用ImageNtHeader（...）獲取文件的PE數據，然后檢查IMAGE_FILE_HEADER.Machine字段。

以下是我使用Google代碼搜索找到的一些代碼

沒有清理並且沒有錯誤檢查

// map the file to our address space
// first, create a file mapping object
hMap = CreateFileMapping( 
  hFile, 
  NULL,           // security attrs
  PAGE_READONLY,  // protection flags
  0,              // max size - high DWORD
  0,              // max size - low DWORD      
  NULL );         // mapping name - not used

// next, map the file to our address space
void* mapAddr = MapViewOfFileEx( 
  hMap,             // mapping object
  FILE_MAP_READ,  // desired access
  0,              // loc to map - hi DWORD
  0,              // loc to map - lo DWORD
  0,              // #bytes to map - 0=all
  NULL );         // suggested map addr

peHdr = ImageNtHeader( mapAddr );

Answer 2

我在Github上開源了一個專門檢查VC ++可再發行DLL的項目，並且我根據Shay的答案中的函數創建了一個代碼片段，該代碼片段成功查找，加載和檢查DLL以實現x86 / x64兼容性 。

以下完整代碼段：

/******************************************************************
Function Name:  CheckProductUsingCurrentDirectory
Description:    Queries the current working directory for a given binary.
Inputs:         pszProductFolderToCheck - the product name to look up.
pBinaryArchitecture - the desired processor architecture
of the binary (x86, x64, etc..).
Results:        true if the requested product is installed
false otherwise
******************************************************************/
bool CheckProductUsingCurrentDirectory(const LPCTSTR pszProductBinaryToCheck, Architecture pBinaryArchitecture){
        bool bFoundRequestedProduct = false;

        //Get the length of the buffer first
        TCHAR currentDirectory[MAX_PATH];
        DWORD currentDirectoryChars = GetCurrentDirectory(MAX_PATH, currentDirectory);

        //exit if couldn't get current directory
        if (currentDirectoryChars <= 0) return bFoundRequestedProduct;

        TCHAR searchPath[MAX_PATH];
        //exit if we couldn't combine the path to the requested binary
        if (PathCombine(searchPath, currentDirectory, pszProductBinaryToCheck) == NULL) return bFoundRequestedProduct;

        WIN32_FIND_DATA FindFileData;
        HANDLE hFind= FindFirstFile(searchPath, &FindFileData);

        //exit if the binary was not found
        if (hFind == INVALID_HANDLE_VALUE) return bFoundRequestedProduct;

        HANDLE hFile = CreateFile(searchPath, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_READONLY, NULL);
        if (hFile == INVALID_HANDLE_VALUE) goto cleanup;

        HANDLE hMapping = CreateFileMapping(hFile, NULL, PAGE_READONLY | SEC_IMAGE, 0, 0, pszProductBinaryToCheck);
        if (hMapping == INVALID_HANDLE_VALUE) goto cleanup;

        LPVOID addrHeader = MapViewOfFile(hMapping, FILE_MAP_READ, 0, 0, 0);
        if (addrHeader == NULL) goto cleanup; //couldn't memory map the file

        PIMAGE_NT_HEADERS peHdr = ImageNtHeader(addrHeader);
        if (peHdr == NULL) goto cleanup; //couldn't read the header

        //Found the binary, AND its architecture matches. Success!
        if (peHdr->FileHeader.Machine == pBinaryArchitecture){
                bFoundRequestedProduct = true;
        }

cleanup: //release all of our handles
        FindClose(hFind);
        if (hFile != INVALID_HANDLE_VALUE)
                CloseHandle(hFile);
        if (hMapping != INVALID_HANDLE_VALUE)
                CloseHandle(hMapping);
        return bFoundRequestedProduct;
}

在我創建這個問題時，這個問題和Shay的回答對我有幫助，所以我想我會在這里發布項目。

Answer 3

您可以自己檢查PE頭以讀取IMAGE_FILE_MACHINE字段。 這是一個C＃實現 ，不應該太難以適應C ++。