66 lines
2.3 KiB
C
66 lines
2.3 KiB
C
/**
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* FreeRDP: A Remote Desktop Protocol Implementation
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*
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*
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* Copyright 2022 David Fort <contact@hardening-consulting.com>
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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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#ifndef SERVER_PROXY_PF_CHANNEL_H_
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#define SERVER_PROXY_PF_CHANNEL_H_
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#include <freerdp/server/proxy/proxy_context.h>
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/** @brief operating mode of a channel tracker */
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typedef enum
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{
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CHANNEL_TRACKER_PEEK, /*!< inquiring content, accumulating packet fragments */
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CHANNEL_TRACKER_PASS, /*!< pass all the fragments of the current packet */
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CHANNEL_TRACKER_DROP /*!< drop all the fragments of the current packet */
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} ChannelTrackerMode;
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typedef struct _ChannelStateTracker ChannelStateTracker;
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typedef PfChannelResult (*ChannelTrackerPeekFn)(ChannelStateTracker* tracker, BOOL first,
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BOOL lastPacket);
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/** @brief a tracker for channel packets */
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struct _ChannelStateTracker
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{
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pServerStaticChannelContext* channel;
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ChannelTrackerMode mode;
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wStream* currentPacket;
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size_t currentPacketReceived;
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size_t currentPacketSize;
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size_t currentPacketFragments;
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ChannelTrackerPeekFn peekFn;
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void* trackerData;
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proxyData* pdata;
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};
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ChannelStateTracker* channelTracker_new(pServerStaticChannelContext* channel,
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ChannelTrackerPeekFn fn, void* data);
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void channelTracker_free(ChannelStateTracker* t);
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PfChannelResult channelTracker_update(ChannelStateTracker* tracker, const BYTE* xdata, size_t xsize,
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UINT32 flags, size_t totalSize);
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PfChannelResult channelTracker_flushCurrent(ChannelStateTracker* t, BOOL first, BOOL last,
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BOOL toFront);
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BOOL pf_channel_setup_rdpdr(pServerContext* ps, pServerStaticChannelContext* channel);
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BOOL pf_channel_setup_generic(pServerStaticChannelContext* channel);
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#endif /* SERVER_PROXY_PF_CHANNEL_H_ */
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