编程如何获得一个DLL中的所有导出函数名称

Question

请教高手，如何编程实现获得一个DLL中的所有导出函数的名称，功能类似于Dependency walker, Dumpbin /EXPORT, DLL export viewer中获得导出函数列表的功能。可以使用windows api或MFC。

Answer 1

根据自己的需要做适当修改bool GetDLLFileExports(char *szFileName, UINT *nNoOfExports, char **&pszFunctions)
{
    HANDLE hFile;
    HANDLE hFileMapping;
    LPVOID lpFileBase;
    PIMAGE_DOS_HEADER pImg_DOS_Header;
    PIMAGE_NT_HEADERS pImg_NT_Header;
    PIMAGE_EXPORT_DIRECTORY pImg_Export_Dir;    hFile = CreateFile(szFileName, GENERIC_READ, FILE_SHARE_READ,
            NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
    if(hFile == INVALID_HANDLE_VALUE)
        return false;    hFileMapping = CreateFileMapping(hFile, NULL, PAGE_READONLY, 0, 0, NULL);
    if(hFileMapping == 0)
    {
        CloseHandle(hFile);
        return false;
    }    lpFileBase = MapViewOfFile(hFileMapping, FILE_MAP_READ, 0, 0, 0);
    if(lpFileBase == 0)
    {
        CloseHandle(hFileMapping);
        CloseHandle(hFile);
        return false;
// 本文转自 C++Builder 研究 - http://www.ccrun.com/article.asp?i=653&d=b2m5o1
    }    pImg_DOS_Header = (PIMAGE_DOS_HEADER)lpFileBase;
    pImg_NT_Header = (PIMAGE_NT_HEADERS)(
            (LONG)pImg_DOS_Header + (LONG)pImg_DOS_Header->e_lfanew);    if(IsBadReadPtr(pImg_NT_Header, sizeof(IMAGE_NT_HEADERS))
            || pImg_NT_Header->Signature != IMAGE_NT_SIGNATURE)
    {
    UnmapViewOfFile(lpFileBase);
    CloseHandle(hFileMapping);
    CloseHandle(hFile);
    return false;
    }    pImg_Export_Dir = (PIMAGE_EXPORT_DIRECTORY)pImg_NT_Header->OptionalHeader
            .DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
    if(!pImg_Export_Dir)
    {
    UnmapViewOfFile(lpFileBase);
    CloseHandle(hFileMapping);
    CloseHandle(hFile);
    return false;
    }
    // 63 63 72 75 6E 2E 63 6F 6D
    pImg_Export_Dir= (PIMAGE_EXPORT_DIRECTORY)ImageRvaToVa(pImg_NT_Header,
            pImg_DOS_Header, (DWORD)pImg_Export_Dir, 0);    DWORD **ppdwNames = (DWORD **)pImg_Export_Dir->AddressOfNames;    ppdwNames = (PDWORD*)ImageRvaToVa(pImg_NT_Header,
            pImg_DOS_Header, (DWORD)ppdwNames, 0);
    if(!ppdwNames)
    {
        UnmapViewOfFile(lpFileBase);
        CloseHandle(hFileMapping);
        CloseHandle(hFile);
        return false;
    }    *nNoOfExports = pImg_Export_Dir->NumberOfNames;
    pszFunctions = new char*[*nNoOfExports];    for(UINT i=0; i < *nNoOfExports; i++)
    {
        char *szFunc=(PSTR)ImageRvaToVa(pImg_NT_Header, pImg_DOS_Header, (DWORD)*ppdwNames, 0);        pszFunctions[i] = new char[strlen(szFunc)+1];
        strcpy(pszFunctions[i],szFunc);        ppdwNames++;
    }
    UnmapViewOfFile(lpFileBase);
    CloseHandle(hFileMapping);
    CloseHandle(hFile);
    return true;
}

Answer 2

多谢两位～～
上面的代码链接需要的dbghelp.dll哪里找？