//+-------------------------------------------------------------------
//
//  File:	remoteu.hxx
//
//  Contents:	Remote Unknown class definition
//
//  Classes:	CRemoteUnknown
//
//  Functions:
//
//  History:	23-Feb-95   AlexMit	Created
//
//  Notes:      Each server has one remote unknown object per OXID.
//		Each client OXID has a table of proxies to OXIDs referenced
//              by the client OXID.  The table includes a pointer
//              to the remote unknown for the client (if it has one).
//              Entries in the table are reference counted.
//              An OXID references a thread in the apartment model and
//              a process in the free threaded model.
//
//--------------------------------------------------------------------
#ifndef __REMOTEU__
#define __REMOTEU__

#include <obase.h>
#include <remunk.h>
#include <odeth.h>

// forward declaration
class	CStdIdentity;

// we set the top bit in the first dword of an IPID to flag the IPID as
// holding weak references, so that RemRelease and RemQueryInterface between
// an OLE container and an embedded object works as desired. Note that this
// this is strictly a same-machine protocol, it is not part of the published
// DCOM protocol spec.

#define IPIDFLAG_WEAKREF    0x80000000


//+-------------------------------------------------------------------------
//
//  Class:	CRemoteUnknown
//
//  Purpose:	Pass remote IUnknown calls and rundowns to the correct
//              local standard identity.
//
//  History:	23-Feb-95   AlexMit	Created
//
//--------------------------------------------------------------------------
class CRemoteUnknown : public IRundown, public CPrivAlloc
{
public:
	 CRemoteUnknown(HRESULT &hr, IPID *pipid);
	~CRemoteUnknown();

    // IUnknown
    STDMETHOD (QueryInterface)   ( REFIID riid, LPVOID FAR* ppvObj);
    STDMETHOD_(ULONG,AddRef)     ( void );
    STDMETHOD_(ULONG,Release)    ( void );

    // IRemUnknown
    STDMETHOD(RemQueryInterface) ( REFIPID	   ripid,
				   ULONG	   cRefs,
                                   unsigned short  cIids,
				   IID		  *iids,
				   REMQIRESULT	 **ppQIResults);

    STDMETHOD(RemAddRef)         ( unsigned short  cInterfaceRefs,
                                   REMINTERFACEREF InterfaceRefs[],
				   HRESULT        *pResults );
    STDMETHOD(RemRelease)        ( unsigned short  cInterfaceRefs,
				   REMINTERFACEREF InterfaceRefs[] );

    // IRemUnknown2
    STDMETHOD(RemChangeRef)	 ( unsigned long   flags,
				   unsigned short  cInterfaceRefs,
				   REMINTERFACEREF InterfaceRefs[]);

    // IRundown
    STDMETHOD(RundownOid)        ( ULONG          cOid,
				   OID		  aOid[],
				   unsigned char  afOkToRundown[] );
private:
    HRESULT GetSecBinding( SECURITYBINDING **pSecBind );

    CStdIdentity *_pStdId;	// stdid for this object
};

// remote unknown pointer for MTA Apartment.
extern CRemoteUnknown *gpMTARemoteUnknown;

#endif // __REMOTEU__