Win32 API枚举dll导出功能？ [英] Win32 API to enumerate dll export functions?

问题描述

我发现类似的问题，但没有回答我正在寻找。所以这里：

对于本机的Win32 dll，是否有一个Win32 API来枚举其导出函数名称？

解决方案

dumpbin / exports 几乎是你想要的，但这是一个开发工具，而不是Win32 API。

LoadLibraryEx 与 DONT_RESOLVE_DLL_REFERENCES 非常警惕，但恰好对于这种特殊情况有用–它将DLL映射到内存（但是实际上并不需要或想要使用库中的任何东西），这使得读取标题变得微不足道： LoadLibraryEx 点。

  #include< winnt.h> 
 HMODULE lib = LoadLibraryEx（library.dll，NULL，DONT_RESOLVE_DLL_REFERENCES）; 
 assert（（（PIMAGE_DOS_HEADER）lib） - > e_magic == IMAGE_DOS_SIGNATURE）; 
 PIMAGE_NT_HEADERS header =（PIMAGE_NT_HEADERS）（（BYTE *）lib +（（PIMAGE_DOS_HEADER）lib） - > e_lfanew）; 
 assert（header-> Signature == IMAGE_NT_SIGNATURE）; 
 assert（header-> OptionalHeader.NumberOfRvaAndSizes> 0）; 
 PIMAGE_EXPORT_DIRECTORY exports =（PIMAGE_EXPORT_DIRECTORY）（（BYTE *）lib + header-> 
 OptionalHeader.DataDirectory [IMAGE_DIRECTORY_ENTRY_EXPORT] .VirtualAddress）; 
 assert（exports-> AddressOfNames！= 0）; 
 BYTE ** names =（BYTE **）（（int）lib + exports-> AddressOfNames）; （int i = 0; i< exports-> NumberOfNames; i ++）
 printf（Export：％s\\\
，（BYTE *）lib +（int）names ]）; 
  

完全未经测试，但我认为它或多或少是正确的。 （着名的最后一句话。）

I found similar questions but no answer to what I am looking for. So here goes:

For a native Win32 dll, is there a Win32 API to enumerate its export function names?

解决方案

dumpbin /exports is pretty much what you want, but that's a developer tool, not a Win32 API.

LoadLibraryEx with DONT_RESOLVE_DLL_REFERENCES is heavily cautioned against, but happens to be useful for this particular case – it does the heavy lifting of mapping the DLL into memory (but you don't actually need or want to use anything from the library), which makes it trivial for you to read the header: the module handle returned by LoadLibraryEx points right at it.

#include <winnt.h>
HMODULE lib = LoadLibraryEx("library.dll", NULL, DONT_RESOLVE_DLL_REFERENCES);
assert(((PIMAGE_DOS_HEADER)lib)->e_magic == IMAGE_DOS_SIGNATURE);
PIMAGE_NT_HEADERS header = (PIMAGE_NT_HEADERS)((BYTE *)lib + ((PIMAGE_DOS_HEADER)lib)->e_lfanew);
assert(header->Signature == IMAGE_NT_SIGNATURE);
assert(header->OptionalHeader.NumberOfRvaAndSizes > 0);
PIMAGE_EXPORT_DIRECTORY exports = (PIMAGE_EXPORT_DIRECTORY)((BYTE *)lib + header->
    OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress);
assert(exports->AddressOfNames != 0);
BYTE** names = (BYTE**)((int)lib + exports->AddressOfNames);
for (int i = 0; i < exports->NumberOfNames; i++)
    printf("Export: %s\n", (BYTE *)lib + (int)names[i]);

Totally untested, but I think it's more or less correct. (Famous last words.)

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