void LoadFromMemory(void)
{
FILE *fp;
unsigned char *data=NULL;
size_t size;
HMEMORYMODULE handle;
addNumberProc addNumber;
HMEMORYRSRC resourceInfo;
DWORD resourceSize;
LPVOID resourceData;
TCHAR buffer[100];
fp = _tfopen(DLL_FILE, _T("rb"));
if (fp == NULL)
{
_tprintf(_T("Can't open DLL file \"%s\"."), DLL_FILE);
goto exit;
}
fseek(fp, 0, SEEK_END);
size = ftell(fp);
data = (unsigned char *)malloc(size);
fseek(fp, 0, SEEK_SET);
fread(data, 1, size, fp);
fclose(fp);
handle = MemoryLoadLibrary(data, NULL);
if (handle == NULL)
{
_tprintf(_T("Can't load library from memory.\n"));
goto exit;
}
addNumber = (addNumberProc)MemoryGetProcAddress(handle, "addNumbers");
_tprintf(_T("From memory: %d\n"), addNumber(1, 2));
resourceInfo = MemoryFindResource(handle, MAKEINTRESOURCE(VS_VERSION_INFO), RT_VERSION);
_tprintf(_T("MemoryFindResource returned 0x%p\n"), resourceInfo);
resourceSize = MemorySizeofResource(handle, resourceInfo);
resourceData = MemoryLoadResource(handle, resourceInfo);
_tprintf(_T("Memory resource data: %ld bytes at 0x%p\n"), resourceSize, resourceData);
MemoryLoadString(handle, 1, buffer, sizeof(buffer));
_tprintf(_T("String1: %s\n"), buffer);
MemoryLoadString(handle, 20, buffer, sizeof(buffer));
_tprintf(_T("String2: %s\n"), buffer);
MemoryFreeLibrary(handle);
exit:
if (data)
free(data);
}
HRESULT CoCOMServer::LoadTypeInfo(ITypeInfo ** pptinfo, const CLSID &libid, const CLSID &iid, LCID lcid)
{
HRESULT hr;
LPTYPELIB ptlib = NULL;
LPTYPEINFO ptinfo = NULL;
*pptinfo = NULL;
// Load type library.
hr = LoadRegTypeLib(libid, 1, 0, lcid, &ptlib);
if (FAILED(hr))
{ // search for TypeLib in current dll
WCHAR buf[MAX_PATH * sizeof(WCHAR)]; // LoadTypeLibEx needs Unicode string
if (GetModuleFileNameW(g_hInstance, buf, _countof(buf)))
hr = LoadTypeLibEx(buf,REGKIND_NONE,&ptlib);
else // MemoryModule, search troug g_ListOfMemoryModules and use temp file to extract and load TypeLib file
{
HMEMORYMODULE hmodule = (HMEMORYMODULE)(g_hMemoryModule);
HMEMORYRSRC res = MemoryFindResource(hmodule,_T("TYPELIB"),MAKEINTRESOURCE(1));
if (!res)
return TYPE_E_INVALIDSTATE;
DWORD resSize = MemorySizeOfResource(hmodule,res);
// Path to temp directory + our temporary file name
DWORD tempPathLength = GetTempPathW(MAX_PATH, buf);
wcscpy(buf + tempPathLength,L"AutoHotkey.MemoryModule.temp.tlb");
// Write manifest to temportary file
// Using FILE_ATTRIBUTE_TEMPORARY will avoid writing it to disk
// It will be deleted after LoadTypeLib has been called.
HANDLE hFile = CreateFileW(buf,GENERIC_WRITE,NULL,NULL,CREATE_ALWAYS,FILE_ATTRIBUTE_TEMPORARY,NULL);
if (hFile == INVALID_HANDLE_VALUE)
{
#if DEBUG_OUTPUT
OutputDebugStringA("CreateFile failed.\n");
#endif
return TYPE_E_CANTLOADLIBRARY; //failed to create file, continue and try loading without CreateActCtx
}
DWORD byteswritten = 0;
WriteFile(hFile,MemoryLoadResource(hmodule,res),resSize,&byteswritten,NULL);
CloseHandle(hFile);
if (byteswritten == 0)
{
#if DEBUG_OUTPUT
OutputDebugStringA("WriteFile failed.\n");
#endif
return TYPE_E_CANTLOADLIBRARY; //failed to write data, continue and try loading
}
hr = LoadTypeLibEx(buf,REGKIND_NONE,&ptlib);
// Open file and automatically delete on CloseHandle (FILE_FLAG_DELETE_ON_CLOSE)
hFile = CreateFileW(buf,GENERIC_WRITE,FILE_SHARE_DELETE,NULL,OPEN_EXISTING,FILE_ATTRIBUTE_TEMPORARY|FILE_FLAG_DELETE_ON_CLOSE,NULL);
CloseHandle(hFile);
}
if (FAILED(hr))
return hr;
}
// Get type information for interface of the object.
hr = ptlib->GetTypeInfoOfGuid(iid, &ptinfo);
if (FAILED(hr))
{
ptlib->Release();
return hr;
}
ptlib->Release();
*pptinfo = ptinfo;
return NOERROR;
}