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425 lines
11 KiB
425 lines
11 KiB
/*++
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Copyright (c) 1999-2000 Microsoft Corporation
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Module Name:
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CTSRDPServerChannelMgr.h
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Abstract:
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This module contains the TSRDP server-side subclass of
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CRemoteDesktopChannelMgr. Classes in this hierarchy are used to multiplex
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a single data channel into multiple client channels.
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CRemoteDesktopChannelMgr handles most of the details of multiplexing
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the data. Subclasses are responsible for implementing the details of
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interfacing with the transport for the underlying single data channel.
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The CTSRDPServerChannelMgr class creates a named pipe that
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can be connected to by the TSRDP Assistant SessionVC Add-In. The TSRDP
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Assistant Session VC Add-In acts as a proxy for virtual channel data
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from the client-side Remote Desktop Host ActiveX Control. A background
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thread in this class handles the movement of data between an instance
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of this class and the proxy.
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Author:
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Tad Brockway 02/00
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Revision History:
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--*/
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#ifndef __CTSRDPSERVERDATACHANNELMGR_H__
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#define __CTSRDPSERVERDATACHANNELMGR_H__
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#include <DataChannelMgr.h>
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#include <atlbase.h>
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#include <aclapi.h>
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#include <RemoteDesktopChannels.h>
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#include <rdshost.h>
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#include <resource.h>
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#include <ServerDataChannelMgrP.h>
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///////////////////////////////////////////////////////
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//
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// CTSRDPServerDataChannel
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//
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// TSRDP Server-Specific Subclass of CRemoteDesktopDataChannel.
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//
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class ATL_NO_VTABLE CTSRDPServerDataChannel :
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public CRemoteDesktopDataChannel,
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public CComObjectRootEx<CComSingleThreadModel>,
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public CComCoClass<CTSRDPServerDataChannel, &CLSID_TSRDPServerDataChannel>,
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public IConnectionPointContainerImpl<CTSRDPServerDataChannel>,
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public IDispatchImpl<ISAFRemoteDesktopDataChannel, &IID_ISAFRemoteDesktopDataChannel, &LIBID_RDSSERVERHOSTLib>,
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public IProvideClassInfo2Impl<&CLSID_TSRDPServerDataChannelMgr, NULL, &LIBID_RDSSERVERHOSTLib>,
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public CProxy_ISAFRemoteDesktopDataChannelEvents< CTSRDPServerDataChannel >
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{
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protected:
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//
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// Scriptable Event Callback Object
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//
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CComPtr<IDispatch> m_OnChannelDataReady;
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//
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// Back pointer to the channel manager.
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//
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CRemoteDesktopChannelMgr *m_ChannelMgr;
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public:
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//
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// Constructor/Destructor
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//
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CTSRDPServerDataChannel();
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virtual ~CTSRDPServerDataChannel();
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//
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// Initialize an instance of this class.
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//
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virtual void Initialize(
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CRemoteDesktopChannelMgr *mgr,
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BSTR channelName
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)
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{
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m_ChannelMgr = mgr;
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m_ChannelName = channelName;
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}
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DECLARE_REGISTRY_RESOURCEID(IDR_TSRDPSERVERDATACHANNEL)
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DECLARE_PROTECT_FINAL_CONSTRUCT()
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BEGIN_COM_MAP(CTSRDPServerDataChannel)
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COM_INTERFACE_ENTRY(ISAFRemoteDesktopDataChannel)
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COM_INTERFACE_ENTRY2(IDispatch, ISAFRemoteDesktopDataChannel)
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COM_INTERFACE_ENTRY(IProvideClassInfo)
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COM_INTERFACE_ENTRY(IProvideClassInfo2)
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COM_INTERFACE_ENTRY(IConnectionPointContainer)
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END_COM_MAP()
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BEGIN_CONNECTION_POINT_MAP(CTSRDPServerDataChannel)
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CONNECTION_POINT_ENTRY(DIID__ISAFRemoteDesktopDataChannelEvents)
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END_CONNECTION_POINT_MAP()
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//
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// ISAFRemoteDesktopDataChannel Methods
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//
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// The parent class handles the details of these methods.
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//
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STDMETHOD(ReceiveChannelData)(/*[out, retval]*/BSTR *data);
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STDMETHOD(SendChannelData)(BSTR data);
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STDMETHOD(put_OnChannelDataReady)(/*[in]*/ IDispatch * newVal);
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STDMETHOD(get_ChannelName)(/*[out, retval]*/ BSTR *pVal);
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//
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// Called to return our ISAFRemoteDesktopDataChannel interface.
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//
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virtual HRESULT GetISAFRemoteDesktopDataChannel(
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ISAFRemoteDesktopDataChannel **channel
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) {
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HRESULT hr;
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hr = this->QueryInterface(
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IID_ISAFRemoteDesktopDataChannel, (PVOID*)channel
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);
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return hr;
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}
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//
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// Called by the data channel manager when data is ready on our channel.
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//
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virtual VOID DataReady();
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//
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// Return this class name.
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//
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virtual const LPTSTR ClassName() { return TEXT("CTSRDPServerDataChannel"); }
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};
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///////////////////////////////////////////////////////
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//
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// CTSRDPServerChannelMgr
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//
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class CTSRDPRemoteDesktopSession;
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class CTSRDPServerChannelMgr : public CRemoteDesktopChannelMgr,
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public CComObjectRootEx<CComSingleThreadModel>,
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public CComCoClass<CTSRDPServerChannelMgr, &CLSID_TSRDPServerDataChannelMgr>,
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public IDispatchImpl<ISAFRemoteDesktopChannelMgr, &IID_ISAFRemoteDesktopChannelMgr, &LIBID_RDSSERVERHOSTLib>,
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public IDispatchImpl<IRDSThreadBridge, &IID_IRDSThreadBridge, &LIBID_RDSSERVERHOSTLib>
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{
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private:
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//
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// Named pipe connection to TSRDP Assistant Session VC Add-In
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//
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HANDLE m_VCAddInPipe;
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BOOL m_Connected;
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BOOL m_Initialized;
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//
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// Management of Bridge between Background Thread and STA
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// for this component.
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//
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LPSTREAM m_IOThreadBridgeStream;
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DWORD m_IOThreadBridgeThreadID;
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IRDSThreadBridge *m_IOThreadBridge;
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//
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// Back Pointer to the TSRDP Session Object
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//
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CTSRDPRemoteDesktopSession *m_RDPSessionObject;
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//
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// Incoming buffer and size.
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//
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BSTR m_IncomingBuffer;
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DWORD m_IncomingBufferSize;
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//
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// Handle to background thread and related events.
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//
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HANDLE m_IOThreadHndl;
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DWORD m_IOThreadID;
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HANDLE m_ReadIOCompleteEvent;
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HANDLE m_WriteIOCompleteEvent;
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HANDLE m_PipeCreateEvent;
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//
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// Machine Assistant Account Name
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//
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CComBSTR m_AssistAccount;
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//
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// Help session ID for the help session associated with this
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// instance of the channel manager.
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//
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CComBSTR m_HelpSessionID;
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//
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// Shutdown flag.
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//
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BOOL m_ThreadShutdownFlag;
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//
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// ThreadLock
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//
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CRITICAL_SECTION m_cs;
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#if DBG
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LONG m_LockCount;
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#endif
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//
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// ThreadLock/ThreadUnlock an instance of this class.
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//
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VOID ThreadLock();
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VOID ThreadUnlock();
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//
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// Background Thread Managing Named Pipe Connection to the
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// TSRDP Assistant SessionVC Add-In.
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//
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DWORD IOThread();
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static DWORD _IOThread(CTSRDPServerChannelMgr *instance);
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//
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// Process messages on the named pipe until it disconnects or
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// until the shutdown flag is set.
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//
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VOID ProcessPipeMessagesUntilDisconnect();
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//
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// Get the SID for a particular user.
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//
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PSID GetUserSid(HANDLE userToken);
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//
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// Release security attribs allocated via a call to
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// GetPipeSecurityAttribs
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//
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VOID FreePipeSecurityAttribs(PSECURITY_ATTRIBUTES attribs);
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//
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// Returns the security attribs for the named pipe.
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//
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PSECURITY_ATTRIBUTES GetPipeSecurityAttribs(LPTSTR assistantUserName);
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//
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// Close the named pipe.
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//
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VOID ClosePipe();
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//
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// Called on Init/Shutdown of IO Background Thread.
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//
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DWORD IOThreadInit();
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DWORD IOThreadShutdown(HANDLE shutDownEvent);
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//
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// Help the parent class out by opening the right channel object
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// for the platform.
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//
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virtual CRemoteDesktopDataChannel *OpenPlatformSpecificDataChannel(
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BSTR channelName,
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ISAFRemoteDesktopDataChannel **channel
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)
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{
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CComObject<CTSRDPServerDataChannel> *obj;
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obj = new CComObject<CTSRDPServerDataChannel>();
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if (obj != NULL) {
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obj->Initialize(this, channelName);
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obj->QueryInterface(
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__uuidof(ISAFRemoteDesktopDataChannel),
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(PVOID *)channel
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);
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// AV if mgr object goes away before datachannel object
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this->AddRef();
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}
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return obj;
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}
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protected:
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//
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// Send Function Invoked by Parent Class
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//
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virtual HRESULT SendData(PREMOTEDESKTOP_CHANNELBUFHEADER msg);
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//
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// Read the next message from the pipe. This function will
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// return, immediately, if the shutdown event is signaled.
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//
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DWORD ReadNextPipeMessage(DWORD bytesToRead, DWORD *bytesRead, PBYTE buf);
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public:
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//
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// Release the ref. counter we add to ourself after creating a data channel
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//
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virtual HRESULT RemoveChannel(BSTR channel) {
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HRESULT hr;
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hr = CRemoteDesktopChannelMgr::RemoveChannel(channel);
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if( SUCCEEDED(hr) ) {
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this->Release();
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}
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return hr;
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}
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//
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// Constructor/Destructor
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//
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CTSRDPServerChannelMgr();
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~CTSRDPServerChannelMgr();
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//
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// Start/stop listening for channel data.
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//
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virtual HRESULT StartListening(BSTR assistAccount);
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virtual HRESULT StopListening();
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DECLARE_REGISTRY_RESOURCEID(IDR_TSRDPSERVERCHANNELMGR)
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DECLARE_PROTECT_FINAL_CONSTRUCT()
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BEGIN_COM_MAP(CTSRDPServerChannelMgr)
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COM_INTERFACE_ENTRY(ISAFRemoteDesktopChannelMgr)
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COM_INTERFACE_ENTRY(IDispatch)
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COM_INTERFACE_ENTRY(IRDSThreadBridge)
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END_COM_MAP()
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//
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// ISAFRemoteDesktopChannelMgr Methods
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//
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STDMETHOD(OpenDataChannel)(BSTR name, ISAFRemoteDesktopDataChannel **channel)
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{
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//
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// Let the parent handle it.
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//
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return OpenDataChannel_(name, channel);
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}
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//
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// Force a disconnect of the currently connected client.
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//
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VOID Disconnect() {
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StopListening();
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}
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//
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// IRDSThreadBridge Functions
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//
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// These functions are used to bridge functions that get called,
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// asynchronously, from a thread other than the STA thread associated
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// with an instance of this class.
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//
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STDMETHOD(ClientConnectedNotify)();
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STDMETHOD(ClientDisconnectedNotify)();
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STDMETHOD(DataReadyNotify)(BSTR data);
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//
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// Initialize an instance of this class.
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//
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virtual HRESULT Initialize(
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CTSRDPRemoteDesktopSession *sessionObject,
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BSTR helpSessionID
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);
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//
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// Return this class name.
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//
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virtual const LPTSTR ClassName()
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{ return TEXT("CTSRDPServerChannelMgr"); }
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};
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///////////////////////////////////////////////////////
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//
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// Inline Members
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//
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//
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// TODO: If nothing is using these functions,
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//
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inline VOID CTSRDPServerChannelMgr::ThreadLock()
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{
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DC_BEGIN_FN("CTSRDPServerChannelMgr::ThreadLock");
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#if DBG
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m_LockCount++;
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//TRC_NRM((TB, TEXT("ThreadLock count is now %ld."), m_LockCount));
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#endif
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EnterCriticalSection(&m_cs);
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DC_END_FN();
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}
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inline VOID CTSRDPServerChannelMgr::ThreadUnlock()
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{
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DC_BEGIN_FN("CTSRDPServerChannelMgr::ThreadUnlock");
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#if DBG
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m_LockCount--;
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//TRC_NRM((TB, TEXT("ThreadLock count is now %ld."), m_LockCount));
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ASSERT(m_LockCount >= 0);
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#endif
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LeaveCriticalSection(&m_cs);
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DC_END_FN();
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}
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#endif //__CTSRDPSERVERDATACHANNELMGR_H__
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