Leaked source code of windows server 2003
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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1992 - 1995
//
// File: machine.cxx
//
// Contents: Implementation of the CMachine class
//
//----------------------------------------------------------------------------
#include "headers.hxx"
DeclareTag(tagMachine, "MTScript", "Monitor IConnectedMachine");
// ***********************************************************************
//
// CMachConnectPoint
//
// ***********************************************************************
CMachConnectPoint::CMachConnectPoint(CMachine *pMach)
{
_ulRefs = 1;
_pMachine = pMach;
_pMachine->AddRef();
}
CMachConnectPoint::~CMachConnectPoint()
{
_pMachine->Release();
}
HRESULT
CMachConnectPoint::QueryInterface(REFIID iid, void **ppv)
{
if (iid == IID_IUnknown || iid == IID_IConnectionPoint)
{
*ppv = (IConnectionPoint *)this;
}
else
{
*ppv = NULL;
return E_NOINTERFACE;
}
((IUnknown *)*ppv)->AddRef();
return S_OK;
}
HRESULT
CMachConnectPoint::GetConnectionInterface(IID * pIID)
{
*pIID = DIID_DRemoteMTScriptEvents;
return S_OK;
}
HRESULT
CMachConnectPoint::GetConnectionPointContainer(IConnectionPointContainer ** ppCPC)
{
*ppCPC = _pMachine;
(*ppCPC)->AddRef();
return S_OK;
}
//+---------------------------------------------------------------------------
//
// Member: CMachConnectPoint::Advise, public
//
// Synopsis: Remembers interface pointers that we want to fire events
// through.
//
// Arguments: [pUnkSink] -- Pointer to remember
// [pdwCookie] -- Place to put cookie for Unadvise
//
// Returns: HRESULT
//
//----------------------------------------------------------------------------
HRESULT
CMachConnectPoint::Advise(IUnknown *pUnkSink, DWORD *pdwCookie)
{
IDispatch *pDisp;
HRESULT hr;
TraceTag((tagMachine, "Advising new machine sink: %p", pUnkSink));
hr = pUnkSink->QueryInterface(IID_IDispatch, (LPVOID*)&pDisp);
if (hr)
{
TraceTag((tagMachine, "Could not get IDispatch pointer on sink! (%x)", hr));
return hr;
}
CMachine::LOCK_MACH_LOCALS(_pMachine);
hr = _pMachine->_aryDispSink.Append(pDisp);
if (hr)
{
TraceTag((tagMachine, "Error appending sink to array!"));
RRETURN(hr);
}
*pdwCookie = (DWORD)pDisp;
return S_OK;
}
//+---------------------------------------------------------------------------
//
// Member: CMachConnectPoint::Unadvise, public
//
// Synopsis: Forgets a pointer we remembered during Advise.
//
// Arguments: [dwCookie] -- Cookie returned from Advise
//
// Returns: HRESULT
//
//----------------------------------------------------------------------------
HRESULT
CMachConnectPoint::Unadvise(DWORD dwCookie)
{
int i;
TraceTag((tagMachine, "Unadvising machine sink: %p", dwCookie));
CMachine::LOCK_MACH_LOCALS(_pMachine);
i = _pMachine->_aryDispSink.Find((IDispatch*)dwCookie);
if (i != -1)
{
_pMachine->_aryDispSink.ReleaseAndDelete(i);
}
else
return E_INVALIDARG;
return S_OK;
}
HRESULT
CMachConnectPoint::EnumConnections(LPENUMCONNECTIONS * ppEnum)
{
*ppEnum = NULL;
RRETURN(E_NOTIMPL);
}
// ***********************************************************************
//
// CMachine
//
// ***********************************************************************
CMachine::CMachine(CMTScript *pMT, ITypeInfo *pTIMachine)
{
_ulRefs = 1;
_pMT = pMT;
TraceTag((tagMachine, "%p: CMachine object being constructed", this));
Assert(pTIMachine);
_pTypeInfoIMachine = pTIMachine;
_pTypeInfoIMachine->AddRef();
InitializeCriticalSection(&_cs);
}
CMachine::~CMachine()
{
ReleaseInterface(_pTypeInfoIMachine);
DeleteCriticalSection(&_cs);
}
HRESULT
CMachine::QueryInterface(REFIID iid, void **ppvObj)
{
if (iid == IID_IConnectedMachine || iid == IID_IUnknown || iid == IID_IDispatch)
{
*ppvObj = (IConnectedMachine *)this;
}
else if (iid == IID_IConnectionPointContainer)
{
*ppvObj = (IConnectionPointContainer *)this;
}
else
{
*ppvObj = NULL;
return E_NOINTERFACE;
}
((IUnknown *)*ppvObj)->AddRef();
return S_OK;
}
//+---------------------------------------------------------------------------
//
// Member: CMachine::Init, public
//
// Synopsis: Used to do initialization that may fail
//
//----------------------------------------------------------------------------
BOOL
CMachine::Init()
{
return CThreadComm::Init();
}
//+---------------------------------------------------------------------------
//
// Member: CMachine::ThreadMain, public
//
// Synopsis: Main loop for this thread. Handles messages coming from other
// threads.
//
//----------------------------------------------------------------------------
DWORD
CMachine::ThreadMain()
{
DWORD dwRet;
BOOL fExit = FALSE;
SetName("CMachine");
ThreadStarted(S_OK);
TraceTag((tagMachine, "CMachine thread started"));
while (!fExit)
{
dwRet = WaitForSingleObject(_hCommEvent, INFINITE);
if (dwRet == WAIT_OBJECT_0)
{
fExit = HandleThreadMessage();
}
else
{
AssertSz(FALSE, "FATAL: WaitForSingleObject failed!");
fExit = TRUE;
}
}
TraceTag((tagMachine, "CMachine thread exiting"));
return 0;
}
//+---------------------------------------------------------------------------
//
// Member: CMachine::HandleThreadMessage, public
//
// Synopsis: Handles messages from other threads.
//
//----------------------------------------------------------------------------
BOOL
CMachine::HandleThreadMessage()
{
VERIFY_THREAD();
THREADMSG tm;
BYTE bData[MSGDATABUFSIZE];
DWORD cbData;
BOOL fRet = FALSE;
while (GetNextMsg(&tm, (void *)bData, &cbData))
{
switch (tm)
{
case MD_NOTIFYSCRIPT:
{
VARIANT *pvar = *(VARIANT**)bData;
Assert(V_VT(&pvar[0]) == VT_BSTR);
FireScriptNotify(V_BSTR(&pvar[0]), pvar[1]);
VariantClear(&pvar[0]);
VariantClear(&pvar[1]);
delete [] pvar;
}
break;
case MD_PLEASEEXIT:
fRet = TRUE;
break;
default:
AssertSz(FALSE, "CMachine got a message it couldn't handle!");
break;
}
}
return fRet;
}
//---------------------------------------------------------------------------
//
// Member: CMachine::EnumConnectionPoints, IConnectionPointContainer
//
//---------------------------------------------------------------------------
HRESULT
CMachine::EnumConnectionPoints(LPENUMCONNECTIONPOINTS *)
{
return E_NOTIMPL;
}
//---------------------------------------------------------------------------
//
// Member: CMachine::FindConnectionPoint, IConnectionPointContainer
//
//---------------------------------------------------------------------------
HRESULT
CMachine::FindConnectionPoint(REFIID iid, LPCONNECTIONPOINT* ppCpOut)
{
HRESULT hr;
if (iid == DIID_DRemoteMTScriptEvents || iid == IID_IDispatch)
{
*ppCpOut = new CMachConnectPoint(this);
hr = *ppCpOut ? S_OK : E_OUTOFMEMORY;
}
else
{
hr = E_NOINTERFACE;
}
RRETURN(hr);
}
//---------------------------------------------------------------------------
//
// Member: CMachine::GetTypeInfo, IDispatch
//
//---------------------------------------------------------------------------
HRESULT
CMachine::GetTypeInfo(UINT itinfo, ULONG lcid, ITypeInfo ** pptinfo)
{
*pptinfo = _pTypeInfoIMachine;
(*pptinfo)->AddRef();
return S_OK;
}
//---------------------------------------------------------------------------
//
// Member: CMachine::GetTypeInfoCount, IDispatch
//
//---------------------------------------------------------------------------
HRESULT
CMachine::GetTypeInfoCount(UINT * pctinfo)
{
*pctinfo = 1;
return S_OK;
}
//---------------------------------------------------------------------------
//
// Member: CMachine::GetIDsOfNames, IDispatch
//
//---------------------------------------------------------------------------
HRESULT
CMachine::GetIDsOfNames(REFIID riid, LPOLESTR * rgszNames, UINT cNames, LCID lcid, DISPID * rgdispid)
{
return _pTypeInfoIMachine->GetIDsOfNames(rgszNames, cNames, rgdispid);
}
//---------------------------------------------------------------------------
//
// Member: CMachine::Invoke, IDispatch
//
//---------------------------------------------------------------------------
HRESULT
CMachine::Invoke(DISPID dispidMember,
REFIID riid,
LCID lcid,
WORD wFlags,
DISPPARAMS * pdispparams,
VARIANT * pvarResult,
EXCEPINFO * pexcepinfo,
UINT * puArgErr)
{
return _pTypeInfoIMachine->Invoke((IConnectedMachine *)this, dispidMember, wFlags, pdispparams, pvarResult, pexcepinfo, puArgErr);
}
// *************************************************************************
//+---------------------------------------------------------------------------
//
// Member: CMachine::FireScriptNotify, public
//
// Synopsis: Fires the script notify event on all objects connected to
// our IConnectedMachine object that have requested to receive
// events (through IConnectionPoint::Advise).
//
// Arguments: [bstrIdent] -- Parameter of event
// [vInfo] -- Parameter of event
//
// Returns: HRESULT
//
// Notes: This method is thread-safe and can be called from any thread.
//
//----------------------------------------------------------------------------
HRESULT
CMachine::FireScriptNotify(BSTR bstrIdent, VARIANT vInfo)
{
HRESULT hr;
IDispatch **ppDisp;
int i;
DISPPARAMS dp;
EXCEPINFO ei;
UINT uArgErr = 0;
VARIANT varg[2];
CStackPtrAry<IDispatch*, 5> arySinks;
// Since it may take some time to fire the events, and we don't want
// to keep the array locked that whole time, we make a copy of the array.
// This will also allow a sink to unadvise itself while handling the event
// without deadlocking.
{
LOCK_MACH_LOCALS(this);
// Check for no sinks. No use going to all this work if there's no one
// listening.
if (_aryDispSink.Size() == 0)
return S_OK;
hr = arySinks.Copy(_aryDispSink, TRUE);
if (hr)
RRETURN(hr);
}
// Set up the event parameters
VariantInit(&varg[0]);
VariantInit(&varg[1]);
// Params are in order from last to first
hr = VariantCopy(&varg[0], &vInfo);
if (hr)
return hr;
V_VT(&varg[1]) = VT_BSTR;
V_BSTR(&varg[1]) = bstrIdent;
dp.rgvarg = varg;
dp.cArgs = 2;
dp.rgdispidNamedArgs = NULL;
dp.cNamedArgs = 0;
// We don't use the same critical section here so _aryDispSink can be
// manipulated while we're firing events. However, we still don't want
// more than one thread firing events at the same time.
TraceTag((tagMachine, "About to fire OnScriptNotify(%ls) on %d sinks...", bstrIdent, arySinks.Size()));
for (i = arySinks.Size(), ppDisp = arySinks;
i > 0;
i--, ppDisp++)
{
hr = (*ppDisp)->Invoke(
DISPID_RemoteMTScript_OnScriptNotify,
IID_NULL,
0,
DISPATCH_METHOD,
&dp,
NULL,
&ei,
&uArgErr);
if (hr)
{
// If the call failed, unadvise so we don't keep trying.
TraceTag((tagError, "OnScriptNotify event call returned %x! Unadvising...", hr));
// If the connection went down temporarily, don't unadvise.
if (hr != HRESULT_FROM_WIN32(RPC_X_BAD_STUB_DATA) &&
hr != HRESULT_FROM_WIN32(RPC_S_COMM_FAILURE))
{
LOCK_MACH_LOCALS(this);
int index = _aryDispSink.Find(*ppDisp);
Assert(index != -1);
_aryDispSink.ReleaseAndDelete(index);
}
}
}
TraceTag((tagMachine, "Done firing OnScriptNotify(%ls).", bstrIdent));
return S_OK;
}
// *************************************************************************
STDMETHODIMP
CMachine::Exec(BSTR bstrCmd, BSTR bstrParams, VARIANT *pvData)
{
// We create an event object for each call on this method. While this
// may have a cost, it makes this method thread-safe. If we cached an
// event object then we would have to synchronize access to that event
// object which could be even more expensive.
MACHPROC_EVENT_DATA med;
MACHPROC_EVENT_DATA * pmed;
HRESULT hr = S_OK;
if (!pvData)
{
return E_INVALIDARG;
}
TraceTag((tagMachine, "Exec call received: (%ls, %ls)", bstrCmd, bstrParams));
VariantInit(pvData);
med.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
if (med.hEvent == NULL)
{
return HRESULT_FROM_WIN32(GetLastError());
}
med.bstrCmd = bstrCmd;
med.bstrParams = bstrParams;
med.dwProcId = 0;
med.pvReturn = pvData;
med.dwGITCookie = 0;
med.hrReturn = S_OK;
pmed = &med;
HANDLE ahEvents[2];
ahEvents[0] = med.hEvent;
CScriptHost *pScript = _pMT->GetPrimaryScript();
if (!pScript)
{
med.hrReturn = E_FAIL;
goto Cleanup;
}
ahEvents[1] = pScript->hThread();
_pMT->PostToThread(pScript,
MD_MACHEVENTCALL,
(LPVOID)&pmed,
sizeof(MACHPROC_EVENT_DATA*));
// We can do WaitForSingleObject because we are in OLE's multi-threaded
// apartment and don't need to handle messages from our event loop.
DWORD dwWait;
dwWait = WaitForMultipleObjects(2, ahEvents, FALSE, INFINITE);
if (dwWait != WAIT_OBJECT_0) // Thread exit
{
med.hrReturn = E_FAIL;
goto Cleanup;
}
if (med.hrReturn != S_OK)
{
hr = med.hrReturn;
goto Cleanup;
}
// See if the return value was an IDispatch ptr. If so, grab the pointer
// out of the GlobalInterfaceTable.
if (V_VT(pvData) == VT_DISPATCH)
{
IDispatch *pDisp;
AssertSz(med.dwGITCookie != 0, "FATAL: Itf pointer improperly marshalled");
hr = _pMT->_pGIT->GetInterfaceFromGlobal(med.dwGITCookie,
IID_IDispatch,
(LPVOID*)&pDisp);
if (!hr)
{
V_VT(pvData) = VT_DISPATCH;
V_DISPATCH(pvData) = pDisp;
}
_pMT->_pGIT->RevokeInterfaceFromGlobal(med.dwGITCookie);
}
Cleanup:
CloseHandle(med.hEvent);
TraceTag((tagMachine, "Exec call returning %x", hr));
return hr;
}
STDMETHODIMP
CMachine::get_PublicData(VARIANT *pvData)
{
HRESULT hr = S_OK;
VariantInit(pvData);
TraceTag((tagMachine, "Remote machine asking for PublicData"));
LOCK_LOCALS(_pMT);
if (V_VT(&_pMT->_vPublicData) == VT_DISPATCH)
{
IDispatch *pDisp;
Assert(_pMT->_dwPublicDataCookie != 0);
hr = _pMT->_pGIT->GetInterfaceFromGlobal(_pMT->_dwPublicDataCookie,
IID_IDispatch,
(LPVOID*)&pDisp);
if (!hr)
{
V_VT(pvData) = VT_DISPATCH;
V_DISPATCH(pvData) = pDisp;
}
}
else
{
hr = VariantCopy(pvData, &_pMT->_vPublicData);
}
return hr;
}
STDMETHODIMP
CMachine::get_Name(BSTR *pbstrName)
{
TCHAR achBuf[MAX_COMPUTERNAME_LENGTH + 1];
DWORD dwLength = ARRAY_SIZE(achBuf);
GetComputerName(achBuf, &dwLength);
*pbstrName = SysAllocString(achBuf);
return (pbstrName) ? S_OK : E_OUTOFMEMORY;
}
STDMETHODIMP
CMachine::get_Platform(BSTR *pbstrPlatform)
{
SYSTEM_INFO si;
GetSystemInfo(&si);
TCHAR *pchPlatform;
if (!pbstrPlatform)
return E_POINTER;
switch (si.wProcessorArchitecture)
{
case PROCESSOR_ARCHITECTURE_INTEL:
pchPlatform = L"x86";
break;
case PROCESSOR_ARCHITECTURE_AMD64:
pchPlatform = L"amd64";
break;
case PROCESSOR_ARCHITECTURE_IA64:
pchPlatform = L"ia64";
break;
case PROCESSOR_ARCHITECTURE_UNKNOWN:
default:
pchPlatform = L"unknown";
break;
}
*pbstrPlatform = SysAllocString(pchPlatform);
if (!*pbstrPlatform)
return E_OUTOFMEMORY;
return S_OK;
}
STDMETHODIMP
CMachine::get_OS(BSTR *pbstrOS)
{
OSVERSIONINFO os;
WCHAR * pchOS = L"Unknown";
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!pbstrOS)
return E_POINTER;
GetVersionEx(&os);
switch (os.dwPlatformId)
{
case VER_PLATFORM_WIN32_WINDOWS:
if ( os.dwMajorVersion > 4
|| ( os.dwMajorVersion == 4
&& os.dwMinorVersion > 0))
{
pchOS = L"Win98";
}
else
{
pchOS = L"Win95";
}
break;
case VER_PLATFORM_WIN32_NT:
if (os.dwMajorVersion == 4)
{
pchOS = L"NT4";
}
else
{
pchOS = L"Win2000";
}
break;
}
*pbstrOS = SysAllocString(pchOS);
if (!*pbstrOS)
return E_OUTOFMEMORY;
return S_OK;
}
STDMETHODIMP
CMachine::get_MajorVer(long *plMajorVer)
{
if (!plMajorVer)
return E_POINTER;
OSVERSIONINFO os;
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&os);
*plMajorVer = os.dwMajorVersion;
return S_OK;
}
STDMETHODIMP
CMachine::get_MinorVer(long *plMinorVer)
{
if (!plMinorVer)
return E_POINTER;
OSVERSIONINFO os;
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&os);
*plMinorVer = os.dwMinorVersion;
return S_OK;
}
STDMETHODIMP
CMachine::get_BuildNum(long *plBuildNum)
{
if (!plBuildNum)
return E_POINTER;
OSVERSIONINFO os;
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&os);
*plBuildNum = os.dwBuildNumber;
return S_OK;
}
STDMETHODIMP
CMachine::get_PlatformIsNT(VARIANT_BOOL *pfIsNT)
{
if (!pfIsNT)
return E_POINTER;
OSVERSIONINFO os;
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&os);
*pfIsNT = (os.dwPlatformId == VER_PLATFORM_WIN32_NT)
? VB_TRUE
: VB_FALSE;
return S_OK;
}
STDMETHODIMP
CMachine::get_ServicePack(BSTR *pbstrServicePack)
{
if (!pbstrServicePack)
return E_POINTER;
OSVERSIONINFO os;
os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&os);
*pbstrServicePack = SysAllocString(os.szCSDVersion);
return (pbstrServicePack) ? S_OK : E_OUTOFMEMORY;
}
STDMETHODIMP
CMachine::get_HostMajorVer(long *plMajorVer)
{
if (!plMajorVer)
return E_POINTER;
*plMajorVer = IConnectedMachine_lVersionMajor;
return S_OK;
}
STDMETHODIMP
CMachine::get_HostMinorVer(long *plMinorVer)
{
if (!plMinorVer)
return E_POINTER;
*plMinorVer = IConnectedMachine_lVersionMinor;
return S_OK;
}
STDMETHODIMP
CMachine::get_StatusValue(long nIndex, long *pnStatus)
{
if (!pnStatus)
return E_POINTER;
return _pMT->get_StatusValue(nIndex, pnStatus);
}