mirror of
https://github.com/gnif/LookingGlass.git
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117 lines
4.3 KiB
C++
117 lines
4.3 KiB
C++
/**
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* Looking Glass
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* Copyright © 2017-2026 The Looking Glass Authors
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* https://looking-glass.io
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 59
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* Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#pragma once
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#include "CClipboardChannel.h"
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#include "CSRWLock.h"
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#include "transport/IClipboardSource.h"
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#include "transport/ITransport.h"
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class CClipboardHub final : private IClipboardChannelHandler
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{
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private:
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static constexpr unsigned MAX_SOURCES = TRANSPORT_MAX_INSTANCES;
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struct Source final : public IClipboardTarget
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{
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CClipboardHub * owner = nullptr;
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BackendId backend = 0;
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uint32_t epoch = 0;
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uint32_t generation = 0;
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IClipboardSource * endpoint = nullptr;
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bool running = false;
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bool active = false;
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bool reserved = false;
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bool failed = false;
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bool failurePending = false;
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ClipboardClaimResult Claim(const ClipboardSourceId& source,
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KVMFRClipboardMessage& cached) override;
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void Release(const ClipboardSourceId& source) override;
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ClipboardChannelResult SendClipboard(
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const KVMFRClipboardMessage& record,
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const uint8_t * data) override;
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ClipboardChannelResult SendClipboardBatch(
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const ClipboardChannelWrite * records,
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size_t count, size_t& accepted) override;
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void ClipboardReceiveReady() override;
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void ClipboardFailed() override;
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};
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CClipboardChannel& m_channel;
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CSRWLock m_lifecycleLock;
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CSRWLock m_callbackLock;
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CSRWLock m_lock;
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Source m_sources[MAX_SOURCES];
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Source * m_owner = nullptr;
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Source * m_cachedSource = nullptr;
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ClipboardSourceId m_ownerId;
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KVMFRClipboardMessage m_cachedClipboard = {};
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uint64_t m_channelEpoch = 0;
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uint32_t m_generation = 1;
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bool m_cachedValid = false;
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bool m_available = false;
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bool m_resetting = false;
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bool m_stopped = false;
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uint32_t NextGenerationNL();
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bool BindingPresentNL(const Source& source) const;
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bool BindingValidNL(const Source& source) const;
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bool OwnerIsNL(
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const Source& source, const ClipboardSourceId& id) const;
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bool MarkFailed(Source& source);
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void CachePublicationNL(
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const KVMFRClipboardMessage& record, Source * source);
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void InvalidateSourceCacheNL(const Source& source);
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ClipboardChannelResult HoldOrDiscard(
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const KVMFRClipboardMessage& record);
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ClipboardClaimResult Claim(Source& source,
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const ClipboardSourceId& id, KVMFRClipboardMessage& cached);
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void Release(Source& source, const ClipboardSourceId& id);
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ClipboardChannelResult SendClipboard(Source& source,
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const KVMFRClipboardMessage& record, const uint8_t * data);
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ClipboardChannelResult SendClipboardBatch(Source& source,
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const ClipboardChannelWrite * records,
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size_t count, size_t& accepted);
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void ClipboardReceiveReady(Source& source);
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void ClipboardFailed(Source& source);
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void ClipboardState(bool available, uint64_t epoch) override;
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ClipboardChannelResult ClipboardRecord(
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const KVMFRClipboardMessage& record,
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std::vector<uint8_t>&& data) override;
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void ClipboardReset(uint64_t epoch, uint32_t reason) override;
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public:
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explicit CClipboardHub(CClipboardChannel& channel);
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~CClipboardHub() override;
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CClipboardHub(const CClipboardHub&) = delete;
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CClipboardHub& operator=(const CClipboardHub&) = delete;
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bool Bind(BackendId backend, uint32_t epoch, IClipboardSource& source);
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void Unbind(BackendId backend, uint32_t epoch);
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bool TakeFailure(SourceKey& source);
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void Stop();
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};
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