165 lines
5.3 KiB
C
165 lines
5.3 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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* Dynamic Virtual Channel Interface
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*
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* Copyright 2010-2011 Vic Lee
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/**
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* DVC Plugin API: See the original MS DVC Client API:
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* http://msdn.microsoft.com/en-us/library/bb540880%28v=VS.85%29.aspx
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*
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* The FreeRDP DVC Plugin API is a simulation of the MS DVC Client API in C.
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* The main difference is that every interface method must take an instance
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* pointer as the first parameter.
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*/
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/**
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* Implemented by DRDYNVC:
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* o IWTSVirtualChannelManager
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* o IWTSListener
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* o IWTSVirtualChannel
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*
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* Implemented by DVC plugin:
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* o IWTSPlugin
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* o IWTSListenerCallback
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* o IWTSVirtualChannelCallback
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*
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* A basic DVC plugin implementation:
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* 1. DVCPluginEntry:
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* The plugin entry point, which creates and initializes a new IWTSPlugin
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* instance
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* 2. IWTSPlugin.Initialize:
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* Call IWTSVirtualChannelManager.CreateListener with a newly created
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* IWTSListenerCallback instance
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* 3. IWTSListenerCallback.OnNewChannelConnection:
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* Create IWTSVirtualChannelCallback instance if the new channel is accepted
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*/
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#ifndef FREERDP_DVC_H
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#define FREERDP_DVC_H
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#include <freerdp/types.h>
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#include <freerdp/addin.h>
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typedef struct _IWTSVirtualChannelManager IWTSVirtualChannelManager;
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typedef struct _IWTSListener IWTSListener;
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typedef struct _IWTSVirtualChannel IWTSVirtualChannel;
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typedef struct _IWTSPlugin IWTSPlugin;
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typedef struct _IWTSListenerCallback IWTSListenerCallback;
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typedef struct _IWTSVirtualChannelCallback IWTSVirtualChannelCallback;
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struct _IWTSListener
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{
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/* Retrieves the listener-specific configuration. */
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int (*GetConfiguration)(IWTSListener *pListener,
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void **ppPropertyBag);
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void *pInterface;
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};
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struct _IWTSVirtualChannel
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{
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/* Starts a write request on the channel. */
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int (*Write)(IWTSVirtualChannel *pChannel,
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UINT32 cbSize,
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BYTE *pBuffer,
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void *pReserved);
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/* Closes the channel. */
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int (*Close)(IWTSVirtualChannel *pChannel);
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};
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struct _IWTSVirtualChannelManager
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{
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/* Returns an instance of a listener object that listens on a specific
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endpoint, or creates a static channel. */
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int (*CreateListener)(IWTSVirtualChannelManager *pChannelMgr,
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const char *pszChannelName,
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UINT32 ulFlags,
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IWTSListenerCallback *pListenerCallback,
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IWTSListener **ppListener);
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/* Push a virtual channel event.
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This is a FreeRDP extension to standard MS API. */
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int (*PushEvent)(IWTSVirtualChannelManager *pChannelMgr,
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wMessage *pEvent);
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/* Find the channel or ID to send data to a specific endpoint. */
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UINT32(*GetChannelId)(IWTSVirtualChannel *channel);
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IWTSVirtualChannel *(*FindChannelById)(IWTSVirtualChannelManager *pChannelMgr,
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UINT32 ChannelId);
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};
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struct _IWTSPlugin
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{
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/* Used for the first call that is made from the client to the plug-in. */
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int (*Initialize)(IWTSPlugin *pPlugin,
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IWTSVirtualChannelManager *pChannelMgr);
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/* Notifies the plug-in that the Remote Desktop Connection (RDC) client
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has successfully connected to the Remote Desktop Session Host (RD
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Session Host) server. */
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int (*Connected)(IWTSPlugin *pPlugin);
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/* Notifies the plug-in that the Remote Desktop Connection (RDC) client
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has disconnected from the RD Session Host server. */
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int (*Disconnected)(IWTSPlugin *pPlugin,
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UINT32 dwDisconnectCode);
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/* Notifies the plug-in that the Remote Desktop Connection (RDC) client
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has terminated. */
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int (*Terminated)(IWTSPlugin *pPlugin);
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/* Extended */
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void *pInterface;
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};
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struct _IWTSListenerCallback
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{
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/* Accepts or denies a connection request for an incoming connection to
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the associated listener. */
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int (*OnNewChannelConnection)(IWTSListenerCallback *pListenerCallback,
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IWTSVirtualChannel *pChannel,
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BYTE *Data,
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int *pbAccept,
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IWTSVirtualChannelCallback **ppCallback);
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};
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struct _IWTSVirtualChannelCallback
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{
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/* Notifies the user about data that is being received. */
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int (*OnDataReceived)(IWTSVirtualChannelCallback *pChannelCallback,
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UINT32 cbSize,
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BYTE *pBuffer);
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/* Notifies the user that the channel has been closed. */
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int (*OnClose)(IWTSVirtualChannelCallback *pChannelCallback);
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};
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/* The DVC Plugin entry points */
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typedef struct _IDRDYNVC_ENTRY_POINTS IDRDYNVC_ENTRY_POINTS;
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struct _IDRDYNVC_ENTRY_POINTS
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{
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int (*RegisterPlugin)(IDRDYNVC_ENTRY_POINTS *pEntryPoints,
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const char *name, IWTSPlugin *pPlugin);
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IWTSPlugin *(*GetPlugin)(IDRDYNVC_ENTRY_POINTS *pEntryPoints,
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const char *name);
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ADDIN_ARGV *(*GetPluginData)(IDRDYNVC_ENTRY_POINTS *pEntryPoints);
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};
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typedef int (*PDVC_PLUGIN_ENTRY)(IDRDYNVC_ENTRY_POINTS *);
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void *get_callback_by_name(const char *name, void **context);
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void add_callback_by_name(const char *name, void *fkt, void *context);
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void remove_callback_by_name(const char *name, void *context);
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#endif /* FREERDP_DVC_H */
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