Win32 API to enumerate dll export functions?
c++, dll, winapi, windows
Solution
`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.)
Problem
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?