. COM

COM ORPCIMarshal

1.1.1 COM1.. . 2. ,. ; ,. 3. .COMDCOM.(.) (,,),.COM.

1.2 COMexe.. DllRegisterServer DllUnregisterServer. ,/ RegServer/UnregServer, (). COMLocalServer32InprocServer32.DllGetClassObject,CoGetClassObject:CoGetClassObjectEXE, ...(/Embedding)CoInitializeCoRegisterClassObjectCOM.,,.DllCanUnloadNow. . ,CoRevokeClassObjectCOM. CoRegisterClassObject CoRevokeClassObject,COM.RPC.:

2. RPC. . RPC. RPCRPC, ORPC. ORPC, . .

2.1 (marshaling) (unmarshaling)marshal,:: 32, .: . ,,,,.: ... .

2.2 ,. ( Apartment , ):.,,COM, ,. ,... :

OXID(). OXIDIPC(),. OXIDOXID(OXID Resolver, OR). ORRPCSS.COMCoMarshalInterface:

HRESULT CoMarshalInterface( IStream *pStm, //,.,,. . REFIID riid, // IUnknown *pUnk, //,riid. DWORD dwDestContext, //. void *long pvDestContext, //. DWORD mshlflags //(,));CoUnmarshalInterfaceHRESULT CoUnmarshalInterface( IStream *pStm, //REFIID riid, // void * * ppvObj //);,(),,.

3 3.1

IMarshal,.: COMORPC (Object Remote Procedure Call). COMMS RPCORPC ORPCRPCCOMORPCNDRNetwork Data RepresentationCORBACDR Common Data RepresentationWebXML:

proxystub

3.2 CoMarshalInterface, COM: . (Stub Manager). COM, OID(). COM..ORPC.COM(interface stub).IPID. ,ORPC[in],,HRESULT[out]ORPC. COM.

IRpcStubBufferclass IRpcStubBuffer : public IUnknown { HRESULT Connect(IUnknown *pUnkServer) = 0; //COM void Disconnect() = 0; // HRESULT Invoke(RPCOLEMESSAGE *pMessage, IRpcChannelBuffer *pChannel) = 0;//ORPC,COMInvoke, *pMessage[in],RPC IRPCStubBuffer* IsIIDSupported(REFIID iid) = 0; ULONG CountRefs() = 0; HRESULT DebugServerQueryInterface(void **ppv) = 0; void DebugServerRelease(void *pv) = 0;};

3.3 CoUnmarshalInterface,(proxy manager). ,COM,(Interface proxy),.. IUnkown.AddRefRelease,,..ORPC([in]).ORPC[out]HRESULT,.

IRpcProxyBuffer.class IRpcProxyBuffer : public IUnknown {HRESULT Connect(IRpcChannelBuffer *pRpcChannelBuffer) = 0; void Disconnect() = 0;};

RPCConnectRPCIRpcChannelBufferGetBufferSendReceive

3.4 .CLSID. (Interface marshaler). IClassFactory (CreateInstance,COM) ,, IPSFactoryBuffer.[ uuid(D5F569D0-593B-101A-B569-08002B2DBF7A),local,object ] interface IPSFactoryBuffer : IUnknown { HRESULT CreateProxy( [in] IUnknown *pUnkOuter, // [in] REFIID riid, //IID [out] IRpcProxyBuffer **ppProxy, // [out] void **ppv ); // HRESULT CreateStub( [in] REFIID riid, // IID[in] IUnknown *pUnkServer, // [out] IRpcStubBuffer **ppStub ); }// CLSID.

3.5 ORPC ORPC,COM(channel), ORPC,IRpcChannelBuffer.typedef struct tagRPCOLEMESSAGE{ void *reserved1; unsigned long dataRepresentation; // endian/ebcdic void *Buffer; // ULONG cbBuffer; //ULONG iMethod; // void *reserved2[5]; ULONG rpcFlags; } RPCOLEMESSAGE; //ORPCclass IRpcChannelBuffer : public IUnknown //ORPC{ HRESULT GetBuffer(RPCOLEMESSAGE *pMessage, REFIID riid) = 0; //HRESULT SendReceive(RPCOLEMESSAGE pMessage,ULONG *pStatus) = 0; //ORPCHRESULT FreeBuffer(RPCOLEMESSAGE pMessage) = 0; //HRESULT GetDestCtx(DWORD *pdwDestCtx, void **ppvDestCtx) = 0;HRESULT IsConnected() = 0;};

4 COMRPC

/IDLIDLdictionary.idlMIDL.exeWin32SDKidlmidl dictionary.idl dictionary.h CC++dictionary_p.c CIDictionarydictionary_i.c CIDLGUIDdlldata.c C/(DllGetClassObject

DEFLIBRARYMyLibDESCRIPTION'IDictionary Interface Proxy/Stub DLL'EXPORTSDllGetClassObject@1 PRIVATEDllCanUnloadNow@2 PRIVATEGetProxyDllInfo @3 PRIVATEDllRegisterServer @4 PRIVATEDllUnregisterServer@5 PRIVATE win32 dll 5projectsettingsC/C++preprocessor definitionsREGISTER_PROXY_DLLprojectsettingsLinkobject/library modules uuid.lib rpcrt4.lib 4,5,6 MAKEREGISTER_PROXY_DLLrpcrt4.libuuid.lib(DLL,)

IDLIDEMIDLIDLmakefile

5. ,.:

IMarshal,.

5.1 IMarshalIMashal:class IMarshal : public IUnknown{ HRESULT GetUnmarshalClass( ...) = 0; //CLSID, CoMashalInterface.HRESULT GetMarshalSizeMax(...) = 0;// CoGetMarshalSizeMaxHRESULT MarshalInterface( ...) = 0; //, CoMarshalInterfaceHRESULT UnmarshalInterface(...) = 0;// CoUnmarshalInterfaceHRESULT DisconnectObject(...) = 0;// CoDisconnectObjectHRESULT ReleaseMarshalData(...) = 0;// CoReleaseMarshalData.};

()IMarshalGetUnmarshalClassCLSID (IMarshalCOMCLSIDCLSID_StdMarshal, )GetMarshalSizeMaxMarshalInterface()streamproxyCLSIDCLSIDproxyproxyIMarshalIMarshal::UnmarshalInterfacestreamproxyproxy

IMarshalIMarshal

5.2 CoGetClassObjectCOMcustom marshalingIClassFactory::CreateInstance, COM.

LPC/RPC

CreateInstance