Win32 API，用于判断给定的二进制文件（EXE或DLL）是x86，x64还是ia64

Question

我试图找到一种编程方式来判断二进制文件是否为x86，x64或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。

欣赏任何指示。

Answer 1

对于EXE

使用GetBinaryType(...)

manged exe的

Here is same question。

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。

Here is some code我发现使用Google代码搜索

没有清理且没有错误检查

// 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 );

Answer 2

我是开源的a project on Github that checks for VC++ redistributable DLLs，我根据Shay的回答successfully finds, loads, and inspects DLLs for x86 / x64 compatibility创建了一个代码片段。

以下完整代码段：

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

这个问题和Shay的答案在我创建时对我有帮助，所以我想我会在这里发布项目。

Answer 3

您可以自行检查PE标头以阅读IMAGE_FILE_MACHINE字段。 Here's a C# implementation不应该太难以适应C ++。