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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// We need Windows 7 headers
#ifdef NTDDI_VERSION
#undef NTDDI_VERSION
#endif
#define NTDDI_VERSION 0x06010000
#ifdef _WIN32_WINNT
#undef _WIN32_WINNT
#endif
#define _WIN32_WINNT 0x0601
#include "DynamicallyLinkedFunctionPtr.h"
#include "mozilla/mscom/Utils.h"
#include "mozilla/RefPtr.h"
#include <objidl.h>
static bool
IsCurrentThreadMTALegacy()
{
// We don't use RefPtr for token because CoGetContextToken does *not*
// increment its refcount!
IUnknown* token = nullptr;
HRESULT hr =
CoGetContextToken(reinterpret_cast<ULONG_PTR*>(&token));
if (FAILED(hr)) {
return false;
}
RefPtr<IComThreadingInfo> threadingInfo;
hr = token->QueryInterface(IID_IComThreadingInfo,
getter_AddRefs(threadingInfo));
if (FAILED(hr)) {
return false;
}
APTTYPE aptType;
hr = threadingInfo->GetCurrentApartmentType(&aptType);
if (FAILED(hr)) {
return false;
}
return aptType == APTTYPE_MTA;
}
namespace mozilla {
namespace mscom {
bool
IsCurrentThreadMTA()
{
static DynamicallyLinkedFunctionPtr<decltype(&::CoGetApartmentType)>
pCoGetApartmentType(L"ole32.dll", "CoGetApartmentType");
if (!pCoGetApartmentType) {
// XP and Vista do not expose the newer API.
return IsCurrentThreadMTALegacy();
}
APTTYPE aptType;
APTTYPEQUALIFIER aptTypeQualifier;
HRESULT hr = pCoGetApartmentType(&aptType, &aptTypeQualifier);
if (FAILED(hr)) {
return false;
}
return aptType == APTTYPE_MTA;
}
bool
IsProxy(IUnknown* aUnknown)
{
if (!aUnknown) {
return false;
}
// Only proxies implement this interface, so if it is present then we must
// be dealing with a proxied object.
RefPtr<IClientSecurity> clientSecurity;
HRESULT hr = aUnknown->QueryInterface(IID_IClientSecurity,
(void**)getter_AddRefs(clientSecurity));
if (SUCCEEDED(hr) || hr == RPC_E_WRONG_THREAD) {
return true;
}
return false;
}
} // namespace mscom
} // namespace mozilla
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