windows-nt/Source/XPSP1/NT/shell/ext/dsui/dsuiext/dll.cpp
2020-09-26 16:20:57 +08:00

165 lines
3.4 KiB
C++

#include "pch.h"
#pragma hdrstop
#define INITGUID
#include <initguid.h>
#include "iids.h"
#define DECL_CRTFREE
#include <crtfree.h>
HINSTANCE g_hInstance = NULL;
LONG g_cRef = 0;
EXTERN_C BOOL DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID pReserved)
{
switch ( dwReason )
{
case DLL_PROCESS_ATTACH:
ClassCache_Init();
TraceSetMaskFromCLSID(CLSID_DsPropertyPages);
g_hInstance = hInstance;
break;
case DLL_PROCESS_DETACH:
ClassCache_Discard();
break;
}
return TRUE;
}
// lifetime
STDAPI_(void) DllAddRef()
{
InterlockedIncrement(&g_cRef);
}
STDAPI_(void) DllRelease()
{
InterlockedDecrement(&g_cRef);
}
STDAPI DllCanUnloadNow(VOID)
{
return (g_cRef > 0) ? S_FALSE : S_OK;
}
// class factory
CF_TABLE_BEGIN(g_ObjectInfo)
CF_TABLE_ENTRY( &CLSID_DsPropertyPages, CDsPropertyPages_CreateInstance, COCREATEONLY),
CF_TABLE_ENTRY( &CLSID_DsDomainTreeBrowser, CDsDomainTreeBrowser_CreateInstance, COCREATEONLY),
CF_TABLE_ENTRY( &CLSID_DsVerbs, CDsVerbs_CreateInstance, COCREATEONLY),
CF_TABLE_ENTRY( &CLSID_DsDisplaySpecifier, CDsDisplaySpecifier_CreateInstance, COCREATEONLY),
CF_TABLE_END(g_ObjectInfo)
STDAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, void **ppv)
{
if (IsEqualIID(riid, IID_IClassFactory) || IsEqualIID(riid, IID_IUnknown))
{
for (LPCOBJECTINFO pcls = g_ObjectInfo; pcls->pclsid; pcls++)
{
if (IsEqualGUID(rclsid, *(pcls->pclsid)))
{
*ppv = (void*)pcls;
DllAddRef();
return NOERROR;
}
}
}
*ppv = NULL;
return CLASS_E_CLASSNOTAVAILABLE;
}
// registration
STDAPI DllRegisterServer(VOID)
{
return CallRegInstall(GLOBAL_HINSTANCE, "RegDll");
}
STDAPI DllUnregisterServer(VOID)
{
return CallRegInstall(GLOBAL_HINSTANCE, "UnRegDll");
}
STDAPI DllInstall(BOOL bInstall, LPCWSTR pszCmdLine)
{
return S_OK;
}
// static class factory
STDMETHODIMP CClassFactory::QueryInterface(REFIID riid, void **ppvObj)
{
if (IsEqualIID(riid, IID_IClassFactory) || IsEqualIID(riid, IID_IUnknown))
{
*ppvObj = (void *)GET_ICLASSFACTORY(this);
InterlockedIncrement(&g_cRef);
return NOERROR;
}
*ppvObj = NULL;
return E_NOINTERFACE;
}
STDMETHODIMP_(ULONG) CClassFactory::AddRef()
{
InterlockedIncrement(&g_cRef);
return 2;
}
STDMETHODIMP_(ULONG) CClassFactory::Release()
{
InterlockedDecrement(&g_cRef);
return 1;
}
STDMETHODIMP CClassFactory::CreateInstance(IUnknown *punkOuter, REFIID riid, void **ppv)
{
*ppv = NULL;
if (punkOuter && !IsEqualIID(riid, IID_IUnknown))
{
// It is technically illegal to aggregate an object and request
// any interface other than IUnknown. Enforce this.
//
return CLASS_E_NOAGGREGATION;
}
else
{
LPOBJECTINFO pthisobj = (LPOBJECTINFO)this;
if ( punkOuter )
return CLASS_E_NOAGGREGATION;
IUnknown *punk;
HRESULT hres = pthisobj->pfnCreateInstance(punkOuter, &punk, pthisobj);
if (SUCCEEDED(hres))
{
hres = punk->QueryInterface(riid, ppv);
punk->Release();
}
return hres;
}
}
STDMETHODIMP CClassFactory::LockServer(BOOL fLock)
{
if (fLock)
InterlockedIncrement(&g_cRef);
else
InterlockedDecrement(&g_cRef);
return S_OK;
}