6

我试图找到一种编程方式来判断二进制文件是 x86、x64 还是 ia64。

平台:Windows。语言:c/c++。

背景:在尝试加载第三方dll之前,我需要找出它的位数。

感谢任何指针。

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3 回答 3

13

对于 EXE

使用GetBinaryType(...)

这是管理 exe 的相同问题。

对于 DLL(和 EXE)

使用ImageNtHeader(...)获取文件的 PE 数据,然后检查 IMAGE_FILE_HEADER.Machine 字段。

这是我使用 Google 代码搜索找到的一些代码

没有清理和没有错误检查

// 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 );
于 2009-06-09T18:25:01.790 回答
2

我在 Github 上开源了一个项目,该项目专门检查 VC++ 可再发行 DLL,并且我根据 Shay 的答案中的函数创建了一个代码片段,它成功地查找、加载和检查 DLL 的 x86 / x64 兼容性

完整的代码片段如下:

/******************************************************************
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;
}

在我创建这个问题时,这个问题和 Shay 的回答对我很有帮助,所以我想我会在这里发布这个项目。

于 2013-11-14T05:18:12.273 回答
0

您可以自己检查 PE 标头以读取该IMAGE_FILE_MACHINE字段。 这是一个 C# 实现,它不应该太难适应 C++。

于 2009-06-16T16:57:10.023 回答