| 1 | /* $Id: RpcChannelHook.h 71716 2018-04-06 18:16:30Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBox COM Rpc Channel Hook definition
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2017-2018 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #ifndef ____H_RPCCHANNELHOOK
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| 19 | #define ____H_RPCCHANNELHOOK
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| 20 |
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| 21 | #include <iprt/cdefs.h>
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| 22 |
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| 23 | #ifdef RT_OS_WINDOWS
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| 24 | #include <iprt/win/windows.h>
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| 25 | #include <ObjIdl.h>
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| 26 |
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| 27 |
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| 28 | typedef void *PRPC_CHANNEL_HOOK;
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| 29 |
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| 30 | // {CEDA3E95-A46A-4C41-AA01-EFFD856E455C}
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| 31 | static const GUID RPC_CHANNEL_EXTENSION_GUID =
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| 32 | { 0xceda3e95, 0xa46a, 0x4c41,{ 0xaa, 0x1, 0xef, 0xfd, 0x85, 0x6e, 0x45, 0x5c } };
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| 33 |
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| 34 | RT_C_DECLS_BEGIN
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| 35 | // C wrapper for using in proxy
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| 36 | void SetupClientRpcChannelHook(void);
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| 37 | RT_C_DECLS_END
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| 38 |
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| 39 |
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| 40 | #if defined(__cplusplus)
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| 41 |
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| 42 | /*
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| 43 | * This is RPC channel hook implementation for registering VirtualBox API clients.
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| 44 | * This channel hook instantiated in COM client process by VBoxProxyStub
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| 45 | * We use it to catch a moment when a new VirtualBox object sucessfully instantiated to
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| 46 | * register new API client in a VBoxSDS clients list.
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| 47 | */
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| 48 | class CRpcChannelHook : public IChannelHook
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| 49 | {
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| 50 | public:
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| 51 | CRpcChannelHook(REFGUID channelHookID = RPC_CHANNEL_EXTENSION_GUID): m_ChannelHookID(channelHookID) {};
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| 52 |
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| 53 | /* IUnknown Interface methods */
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| 54 | STDMETHODIMP QueryInterface(REFIID riid, void **ppv);
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| 55 | STDMETHODIMP_(ULONG) AddRef(void);
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| 56 | STDMETHODIMP_(ULONG) Release(void);
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| 57 |
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| 58 | /* IChannelHook Interface methods */
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| 59 | STDMETHODIMP_(void) ClientGetSize(REFGUID uExtent, REFIID riid, ULONG *pDataSize);
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| 60 | STDMETHODIMP_(void) ClientFillBuffer(REFGUID uExtent, REFIID riid, ULONG *pDataSize, void *pDataBuffer);
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| 61 | STDMETHODIMP_(void) ClientNotify(REFGUID uExtent, REFIID riid, ULONG cbDataSize, void *pDataBuffer, DWORD lDataRep, HRESULT hrFault);
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| 62 |
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| 63 | STDMETHODIMP_(void) ServerNotify(REFGUID uExtent, REFIID riid, ULONG cbDataSize, void *pDataBuffer, DWORD lDataRep);
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| 64 | STDMETHODIMP_(void) ServerGetSize(REFGUID uExtent, REFIID riid, HRESULT hrFault, ULONG *pDataSize);
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| 65 | STDMETHODIMP_(void) ServerFillBuffer(REFGUID uExtent, REFIID riid, ULONG *pDataSize, void *pDataBuffer, HRESULT hrFault);
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| 66 |
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| 67 | protected:
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| 68 | static bool IsChannelHookRegistered();
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| 69 | static void RegisterChannelHook();
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| 70 |
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| 71 | protected:
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| 72 | const GUID m_ChannelHookID;
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| 73 | static volatile bool s_fChannelRegistered;
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| 74 | static volatile bool s_fVBpoxSDSCalledOnce;
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| 75 | static CRpcChannelHook s_RpcChannelHook;
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| 76 |
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| 77 | /* C wrapper*/
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| 78 | friend void SetupClientRpcChannelHook(void);
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| 79 | };
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| 80 |
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| 81 |
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| 82 | #endif // #if defined(__cplusplus)
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| 83 |
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| 84 |
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| 85 | #endif // #ifdef RT_OS_WINDOWS
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| 86 |
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| 87 | #endif // ____H_RPCCHANNELHOOK
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